102015627561 has 12 divisors (see below), whose sum is σ = 147780567792. Its totient is φ = 67814420856.

The previous prime is 102015627559. The next prime is 102015627589. The reversal of 102015627561 is 165726510201.

102015627561 is a `hidden beast` number, since 1 + 0 + 20 + 1 + 5 + 627 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 102015627561 - 2¹ = 102015627559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102015627061) 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, 16329831 + ... + 16336076.

It is an arithmetic number, because the mean of its divisors is an integer number (12315047316).

Almost surely, 2^102015627561 is an apocalyptic number.

It is an amenable number.

102015627561 is a deficient number, since it is larger than the sum of its proper divisors (45764940231).

102015627561 is a wasteful number, since it uses less digits than its factorization.

102015627561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32666260 (or 32666257 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 102015627561 in words is "one hundred two billion, fifteen million, six hundred twenty-seven thousand, five hundred sixty-one".