87691074213072 has 80 divisors (see below), whose sum is σ = 247132750438080. Its totient is φ = 26572691558400.

The previous prime is 87691074213031. The next prime is 87691074213073. The reversal of 87691074213072 is 27031247019678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87691074213073) 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, 39105322 + ... + 41286902.

It is an arithmetic number, because the mean of its divisors is an integer number (3089159380476).

Almost surely, 2^{87691074213072} is an apocalyptic number.

It is an amenable number.

87691074213072 is an abundant number, since it is smaller than the sum of its proper divisors (159441676225008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87691074213072 is a wasteful number, since it uses less digits than its factorization.

87691074213072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257732 (or 2257726 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 87691074213072 in words is "eighty-seven trillion, six hundred ninety-one billion, seventy-four million, two hundred thirteen thousand, seventy-two".