990546069031 has 4 divisors (see below), whose sum is σ = 1022499168064. Its totient is φ = 958592970000.

The previous prime is 990546069013. The next prime is 990546069043. The reversal of 990546069031 is 130960645099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 990546069031 - 2⁷ = 990546068903 is a prime.

It is a super-2 number, since 2×990546069031² (a number of 25 digits) contains 22 as substring.

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 990546069031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990546069001) 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, 15976549470 + ... + 15976549531.

It is an arithmetic number, because the mean of its divisors is an integer number (255624792016).

Almost surely, 2^990546069031 is an apocalyptic number.

990546069031 is a deficient number, since it is larger than the sum of its proper divisors (31953099033).

990546069031 is a wasteful number, since it uses less digits than its factorization.

990546069031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31953099032.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The spelling of 990546069031 in words is "nine hundred ninety billion, five hundred forty-six million, sixty-nine thousand, thirty-one".