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87908622150121 = 232191870046439
BaseRepresentation
bin10011111111001111010010…
…001100100010100111101001
3102112020222112000200200122221
4103333033102030202213221
543010243324232300441
6510544355152114041
724342121415203153
oct2377172214424751
9375228460620587
1087908622150121
1126012923481283
129a39343835921
133a0899433c606
14179cb2b34bad3
15a26a895a58d1
hex4ff3d23229e9

87908622150121 has 12 divisors (see below), whose sum is σ = 92378050813440. Its totient is φ = 83646264549320.

The previous prime is 87908622150113. The next prime is 87908622150127. The reversal of 87908622150121 is 12105122680978.

It is not a de Polignac number, because 87908622150121 - 23 = 87908622150113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87908622150127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 434922181 + ... + 435124258.

It is an arithmetic number, because the mean of its divisors is an integer number (7698170901120).

Almost surely, 287908622150121 is an apocalyptic number.

It is an amenable number.

87908622150121 is a deficient number, since it is larger than the sum of its proper divisors (4469428663319).

87908622150121 is a wasteful number, since it uses less digits than its factorization.

87908622150121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870046676 (or 870046653 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 87908622150121 in words is "eighty-seven trillion, nine hundred eight billion, six hundred twenty-two million, one hundred fifty thousand, one hundred twenty-one".

Divisors: 1 23 191 529 4393 101039 870046439 20011068097 166178869849 460254566231 3822114006527 87908622150121