15557542364 has 96 divisors (see below), whose sum is σ = 34169856000. Its totient is φ = 6034279680.

The previous prime is 15557542349. The next prime is 15557542369. The reversal of 15557542364 is 46324575551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15557542369) 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, 4282829 + ... + 4286459.

It is an arithmetic number, because the mean of its divisors is an integer number (355936000).

Almost surely, 2^15557542364 is an apocalyptic number.

15557542364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15557542364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17084928000).

15557542364 is an abundant number, since it is smaller than the sum of its proper divisors (18612313636).

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

15557542364 is a wasteful number, since it uses less digits than its factorization.

15557542364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883 (or 3881 counting only the distinct ones).

The product of its digits is 2520000, while the sum is 47.

The spelling of 15557542364 in words is "fifteen billion, five hundred fifty-seven million, five hundred forty-two thousand, three hundred sixty-four".