791167681040 has 40 divisors (see below), whose sum is σ = 2006688938688. Its totient is φ = 287697338240.

The previous prime is 791167681037. The next prime is 791167681061. The reversal of 791167681040 is 40186761197.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×791167681040² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 791167681040.

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, 449526212 + ... + 449527971.

Almost surely, 2^791167681040 is an apocalyptic number.

It is an amenable number.

791167681040 is an abundant number, since it is smaller than the sum of its proper divisors (1215521257648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

791167681040 is a wasteful number, since it uses less digits than its factorization.

791167681040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899054207 (or 899054201 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 791167681040 in words is "seven hundred ninety-one billion, one hundred sixty-seven million, six hundred eighty-one thousand, forty".