87561939627 has 32 divisors (see below), whose sum is σ = 137400701760. Its totient is φ = 54921369600.

The previous prime is 87561939587. The next prime is 87561939667. The reversal of 87561939627 is 72693916578.

87561939627 is a `hidden beast` number, since 8 + 7 + 5 + 619 + 3 + 9 + 6 + 2 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (87561939587) and next prime (87561939667).

It is not a de Polignac number, because 87561939627 - 2⁸ = 87561939371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87561939667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1323127 + ... + 1387727.

It is an arithmetic number, because the mean of its divisors is an integer number (4293771930).

Almost surely, 2^87561939627 is an apocalyptic number.

87561939627 is a deficient number, since it is larger than the sum of its proper divisors (49838762133).

87561939627 is a wasteful number, since it uses less digits than its factorization.

87561939627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67580 (or 67574 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 87561939627 in words is "eighty-seven billion, five hundred sixty-one million, nine hundred thirty-nine thousand, six hundred twenty-seven".