90272451017 has 4 divisors (see below), whose sum is σ = 103168515456. Its totient is φ = 77376386580.

The previous prime is 90272451013. The next prime is 90272451023. The reversal of 90272451017 is 71015427209.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71015427209 = 43 ⋅1651521563.

It is a cyclic number.

It is not a de Polignac number, because 90272451017 - 2² = 90272451013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90272451013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6448032209 + ... + 6448032222.

It is an arithmetic number, because the mean of its divisors is an integer number (25792128864).

Almost surely, 2^90272451017 is an apocalyptic number.

It is an amenable number.

90272451017 is a deficient number, since it is larger than the sum of its proper divisors (12896064439).

90272451017 is a wasteful number, since it uses less digits than its factorization.

90272451017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12896064438.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 90272451017 in words is "ninety billion, two hundred seventy-two million, four hundred fifty-one thousand, seventeen".