90172898070 has 64 divisors (see below), whose sum is σ = 219394941120. Its totient is φ = 23716352000.

The previous prime is 90172898069. The next prime is 90172898099. The reversal of 90172898070 is 7089827109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1028560 + ... + 1112780.

It is an arithmetic number, because the mean of its divisors is an integer number (3428045955).

Almost surely, 2^90172898070 is an apocalyptic number.

90172898070 is an abundant number, since it is smaller than the sum of its proper divisors (129222043050).

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

90172898070 is a wasteful number, since it uses less digits than its factorization.

90172898070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84721.

The product of its (nonzero) digits is 508032, while the sum is 51.

The spelling of 90172898070 in words is "ninety billion, one hundred seventy-two million, eight hundred ninety-eight thousand, seventy".