90930911951 has 16 divisors (see below), whose sum is σ = 99769356288. Its totient is φ = 82188751200.

The previous prime is 90930911947. The next prime is 90930911957. The reversal of 90930911951 is 15911903909.

It is a cyclic number.

It is not a de Polignac number, because 90930911951 - 2² = 90930911947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90930911896 and 90930911905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90930911957) 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 in 15 ways as a sum of consecutive naturals, for example, 1931786 + ... + 1978296.

It is an arithmetic number, because the mean of its divisors is an integer number (6235584768).

Almost surely, 2^90930911951 is an apocalyptic number.

90930911951 is a deficient number, since it is larger than the sum of its proper divisors (8838444337).

90930911951 is a wasteful number, since it uses less digits than its factorization.

90930911951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47542.

The product of its (nonzero) digits is 98415, while the sum is 47.

The spelling of 90930911951 in words is "ninety billion, nine hundred thirty million, nine hundred eleven thousand, nine hundred fifty-one".