561938146490 has 16 divisors (see below), whose sum is σ = 1155987044352. Its totient is φ = 192664507344.

The previous prime is 561938146489. The next prime is 561938146577. The reversal of 561938146490 is 94641839165.

561938146490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4013843834 + ... + 4013843973.

It is an arithmetic number, because the mean of its divisors is an integer number (72249190272).

Almost surely, 2^561938146490 is an apocalyptic number.

561938146490 is an abundant number, since it is smaller than the sum of its proper divisors (594048897862).

561938146490 is a wasteful number, since it uses less digits than its factorization.

561938146490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027687821.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 561938146490 in words is "five hundred sixty-one billion, nine hundred thirty-eight million, one hundred forty-six thousand, four hundred ninety".