1561674934384 has 20 divisors (see below), whose sum is σ = 3053504318920. Its totient is φ = 773673819840.

The previous prime is 1561674934319. The next prime is 1561674934409. The reversal of 1561674934384 is 4834394761651.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447726162 + ... + 447729649.

It is an arithmetic number, because the mean of its divisors is an integer number (152675215946).

Almost surely, 2^{1561674934384} is an apocalyptic number.

It is an amenable number.

1561674934384 is a deficient number, since it is larger than the sum of its proper divisors (1491829384536).

1561674934384 is a wasteful number, since it uses less digits than its factorization.

1561674934384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895455928 (or 895455922 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 61.

The spelling of 1561674934384 in words is "one trillion, five hundred sixty-one billion, six hundred seventy-four million, nine hundred thirty-four thousand, three hundred eighty-four".