1561429406484 has 36 divisors (see below), whose sum is σ = 3996907911360. Its totient is φ = 513888158160.

The previous prime is 1561429406477. The next prime is 1561429406533. The reversal of 1561429406484 is 4846049241651.

1561429406484 is a `hidden beast` number, since 1 + 56 + 142 + 9 + 406 + 48 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1561429406484.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274510062 + ... + 274515749.

It is an arithmetic number, because the mean of its divisors is an integer number (111025219760).

Almost surely, 2^{1561429406484} is an apocalyptic number.

It is an amenable number.

1561429406484 is an abundant number, since it is smaller than the sum of its proper divisors (2435478504876).

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

1561429406484 is a wasteful number, since it uses less digits than its factorization.

1561429406484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549025900 (or 549025895 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 1561429406484 in words is "one trillion, five hundred sixty-one billion, four hundred twenty-nine million, four hundred six thousand, four hundred eighty-four".