561037493388 has 48 divisors (see below), whose sum is σ = 1315015198560. Its totient is φ = 186167299584.

The previous prime is 561037493371. The next prime is 561037493407. The reversal of 561037493388 is 883394730165.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2687728 + ... + 2888936.

It is an arithmetic number, because the mean of its divisors is an integer number (27396149970).

Almost surely, 2^561037493388 is an apocalyptic number.

It is an amenable number.

561037493388 is an abundant number, since it is smaller than the sum of its proper divisors (753977705172).

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

561037493388 is a wasteful number, since it uses less digits than its factorization.

561037493388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202266 (or 202264 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 561037493388 in words is "five hundred sixty-one billion, thirty-seven million, four hundred ninety-three thousand, three hundred eighty-eight".