15541321053 has 16 divisors (see below), whose sum is σ = 22125565440. Its totient is φ = 9679931184.

The previous prime is 15541321027. The next prime is 15541321093. The reversal of 15541321053 is 35012314551.

It is not a de Polignac number, because 15541321053 - 2⁵ = 15541321021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15541321053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15541321013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2616063 + ... + 2621996.

It is an arithmetic number, because the mean of its divisors is an integer number (1382847840).

Almost surely, 2^15541321053 is an apocalyptic number.

It is an amenable number.

15541321053 is a deficient number, since it is larger than the sum of its proper divisors (6584244387).

15541321053 is a wasteful number, since it uses less digits than its factorization.

15541321053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238128.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 15541321053 in words is "fifteen billion, five hundred forty-one million, three hundred twenty-one thousand, fifty-three".