291880628692 has 12 divisors (see below), whose sum is σ = 510861731380. Its totient is φ = 145920134016.

The previous prime is 291880628687. The next prime is 291880628813. The reversal of 291880628692 is 296826088192.

It can be written as a sum of positive squares in 2 ways, for example, as 261994517316 + 29886111376 = 511854^2 + 172876^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 291880628692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5012517 + ... + 5070412.

Almost surely, 2^291880628692 is an apocalyptic number.

It is an amenable number.

291880628692 is a deficient number, since it is larger than the sum of its proper divisors (218981102688).

291880628692 is a wasteful number, since it uses less digits than its factorization.

291880628692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10090170 (or 10090168 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 291880628692 in words is "two hundred ninety-one billion, eight hundred eighty million, six hundred twenty-eight thousand, six hundred ninety-two".