990071268495 has 32 divisors (see below), whose sum is σ = 1600969536000. Its totient is φ = 522449161344.

The previous prime is 990071268469. The next prime is 990071268623. The reversal of 990071268495 is 594862170099.

It is not a de Polignac number, because 990071268495 - 2²⁵ = 990037714063 is a prime.

It is a super-2 number, since 2×990071268495² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392172 + ... + 1460801.

It is an arithmetic number, because the mean of its divisors is an integer number (50030298000).

Almost surely, 2^990071268495 is an apocalyptic number.

990071268495 is a deficient number, since it is larger than the sum of its proper divisors (610898267505).

990071268495 is a wasteful number, since it uses less digits than its factorization.

990071268495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853359.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 990071268495 in words is "nine hundred ninety billion, seventy-one million, two hundred sixty-eight thousand, four hundred ninety-five".