90156115702 has 4 divisors (see below), whose sum is σ = 135234173556. Its totient is φ = 45078057850.

The previous prime is 90156115681. The next prime is 90156115703. The reversal of 90156115702 is 20751165109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20751165109 = 2203 ⋅9419503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90156115703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22539028924 + ... + 22539028927.

It is an arithmetic number, because the mean of its divisors is an integer number (33808543389).

Almost surely, 2^90156115702 is an apocalyptic number.

90156115702 is a deficient number, since it is larger than the sum of its proper divisors (45078057854).

90156115702 is a wasteful number, since it uses less digits than its factorization.

90156115702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45078057853.

The product of its (nonzero) digits is 18900, while the sum is 37.

The spelling of 90156115702 in words is "ninety billion, one hundred fifty-six million, one hundred fifteen thousand, seven hundred two".