291277954012 has 6 divisors (see below), whose sum is σ = 509736419528. Its totient is φ = 145638977004.

The previous prime is 291277953997. The next prime is 291277954013. The reversal of 291277954012 is 210459772192.

It is a super-2 number, since 2×291277954012² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (291277954013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36409744248 + ... + 36409744255.

Almost surely, 2^291277954012 is an apocalyptic number.

It is an amenable number.

291277954012 is a deficient number, since it is larger than the sum of its proper divisors (218458465516).

291277954012 is a wasteful number, since it uses less digits than its factorization.

291277954012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72819488507 (or 72819488505 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 291277954012 in words is "two hundred ninety-one billion, two hundred seventy-seven million, nine hundred fifty-four thousand, twelve".