15561134463 has 32 divisors (see below), whose sum is σ = 24976867840. Its totient is φ = 8418453120.

The previous prime is 15561134461. The next prime is 15561134471. The reversal of 15561134463 is 36443116551.

It is not a de Polignac number, because 15561134463 - 2¹ = 15561134461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15561134461) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 624993 + ... + 649413.

It is an arithmetic number, because the mean of its divisors is an integer number (780527120).

Almost surely, 2^15561134463 is an apocalyptic number.

15561134463 is a deficient number, since it is larger than the sum of its proper divisors (9415733377).

15561134463 is a wasteful number, since it uses less digits than its factorization.

15561134463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26047.

The product of its digits is 129600, while the sum is 39.

The spelling of 15561134463 in words is "fifteen billion, five hundred sixty-one million, one hundred thirty-four thousand, four hundred sixty-three".