990071268496 has 40 divisors (see below), whose sum is σ = 1932653188440. Its totient is φ = 491335643136.

The previous prime is 990071268469. The next prime is 990071268623. The reversal of 990071268496 is 694862170099.

It can be written as a sum of positive squares in 4 ways, for example, as 10802692096 + 979268576400 = 103936^2 + 989580^2 .

It is a super-4 number, since 4×990071268496⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742620 + ... + 1591108.

It is an arithmetic number, because the mean of its divisors is an integer number (48316329711).

Almost surely, 2^990071268496 is an apocalyptic number.

It is an amenable number.

990071268496 is a deficient number, since it is larger than the sum of its proper divisors (942581919944).

990071268496 is a wasteful number, since it uses less digits than its factorization.

990071268496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849043 (or 849037 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 990071268496 in words is "nine hundred ninety billion, seventy-one million, two hundred sixty-eight thousand, four hundred ninety-six".