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87929628743149 = 883244151797877
BaseRepresentation
bin10011111111100010110110…
…010010010101010111101101
3102112022222202000022011221221
4103333202312102111113231
543011114334424240044
6511002151440223341
724343464112250464
oct2377426622252755
9375288660264857
1087929628743149
1126020823117566
129a4142690ab51
133a0a96142230b
14179db611b99db
15a273b88a6484
hex4ff8b64955ed

87929628743149 has 16 divisors (see below), whose sum is σ = 88093458573120. Its totient is φ = 87765971610240.

The previous prime is 87929628743141. The next prime is 87929628743167. The reversal of 87929628743149 is 94134782692978.

It is a cyclic number.

It is not a de Polignac number, because 87929628743149 - 23 = 87929628743141 is a prime.

It is a super-2 number, since 2×879296287431492 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87929628743141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11162828199 + ... + 11162836075.

It is an arithmetic number, because the mean of its divisors is an integer number (5505841160820).

Almost surely, 287929628743149 is an apocalyptic number.

It is an amenable number.

87929628743149 is a deficient number, since it is larger than the sum of its proper divisors (163829829971).

87929628743149 is a wasteful number, since it uses less digits than its factorization.

87929628743149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16380.

The product of its digits is 2633637888, while the sum is 79.

The spelling of 87929628743149 in words is "eighty-seven trillion, nine hundred twenty-nine billion, six hundred twenty-eight million, seven hundred forty-three thousand, one hundred forty-nine".

Divisors: 1 883 2441 5179 7877 2155403 4573057 6955391 12641939 19227757 40794983 11162832137 16978109431 36021969989 99580553503 87929628743149