90033915137 has 4 divisors (see below), whose sum is σ = 90102175680. Its totient is φ = 89965654596.

The previous prime is 90033915131. The next prime is 90033915187. The reversal of 90033915137 is 73151933009.

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: 73151933009 = 167 ⋅438035527.

It is a cyclic number.

It is not a de Polignac number, because 90033915137 - 2⁴ = 90033915121 is a prime.

It is a super-2 number, since 2×90033915137² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90033915094 and 90033915103.

It is not an unprimeable number, because it can be changed into a prime (90033915131) 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, 34128293 + ... + 34130930.

It is an arithmetic number, because the mean of its divisors is an integer number (22525543920).

Almost surely, 2^90033915137 is an apocalyptic number.

It is an amenable number.

90033915137 is a deficient number, since it is larger than the sum of its proper divisors (68260543).

90033915137 is a wasteful number, since it uses less digits than its factorization.

90033915137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68260542.

The product of its (nonzero) digits is 76545, while the sum is 41.

The spelling of 90033915137 in words is "ninety billion, thirty-three million, nine hundred fifteen thousand, one hundred thirty-seven".