90368145157 has 4 divisors (see below), whose sum is σ = 90395294220. Its totient is φ = 90340996096.

The previous prime is 90368145103. The next prime is 90368145209. The reversal of 90368145157 is 75154186309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75154186309 = 30491 ⋅2464799.

It can be written as a sum of positive squares in 2 ways, for example, as 52605550881 + 37762594276 = 229359^2 + 194326^2 .

It is a cyclic number.

It is not a de Polignac number, because 90368145157 - 2²⁷ = 90233927429 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90368145157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90368115157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13569538 + ... + 13576195.

It is an arithmetic number, because the mean of its divisors is an integer number (22598823555).

Almost surely, 2^90368145157 is an apocalyptic number.

It is an amenable number.

90368145157 is a deficient number, since it is larger than the sum of its proper divisors (27149063).

90368145157 is a wasteful number, since it uses less digits than its factorization.

90368145157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27149062.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 90368145157 in words is "ninety billion, three hundred sixty-eight million, one hundred forty-five thousand, one hundred fifty-seven".