90156051727 has 12 divisors (see below), whose sum is σ = 105038547096. Its totient is φ = 77156407440.

The previous prime is 90156051691. The next prime is 90156051757. The reversal of 90156051727 is 72715065109.

It is a de Polignac number, because none of the positive numbers 2^k-90156051727 is a prime.

It is a super-2 number, since 2×90156051727² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90156051757) 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, 1399224 + ... + 1462237.

It is an arithmetic number, because the mean of its divisors is an integer number (8753212258).

Almost surely, 2^90156051727 is an apocalyptic number.

90156051727 is a deficient number, since it is larger than the sum of its proper divisors (14882495369).

90156051727 is a wasteful number, since it uses less digits than its factorization.

90156051727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862118 (or 2862111 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 43.

The spelling of 90156051727 in words is "ninety billion, one hundred fifty-six million, fifty-one thousand, seven hundred twenty-seven".