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87691074213067 = 1318991973551747
BaseRepresentation
bin10011111100000100101011…
…010101000001010011001011
3102111111011222201212102220221
4103330010223111001103023
542443212304444304232
6510300420124530511
724320320365224623
oct2374045325012313
9374434881772827
1087691074213067
1125a39637323266
129a0314b3b0a37
1339c130465c840
1417923b08b7883
15a210a57c2897
hex4fc12b5414cb

87691074213067 has 8 divisors (see below), whose sum is σ = 94436617773456. Its totient is φ = 80945541554592.

The previous prime is 87691074213031. The next prime is 87691074213073. The reversal of 87691074213067 is 76031247019678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87691074213067 - 215 = 87691074180299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87691074212996 and 87691074213014.

It is not an unprimeable number, because it can be changed into a prime (87691074214067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22913688 + ... + 26465434.

It is an arithmetic number, because the mean of its divisors is an integer number (11804577221682).

Almost surely, 287691074213067 is an apocalyptic number.

87691074213067 is a deficient number, since it is larger than the sum of its proper divisors (6745543560389).

87691074213067 is a wasteful number, since it uses less digits than its factorization.

87691074213067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450957.

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 87691074213067 in words is "eighty-seven trillion, six hundred ninety-one billion, seventy-four million, two hundred thirteen thousand, sixty-seven".

Divisors: 1 13 1899197 3551747 24689561 46172711 6745467247159 87691074213067