15535044051 has 4 divisors (see below), whose sum is σ = 20713392072. Its totient is φ = 10356696032.

The previous prime is 15535044047. The next prime is 15535044089. The reversal of 15535044051 is 15044053551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15535044051 - 2² = 15535044047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15535044751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2589174006 + ... + 2589174011.

It is an arithmetic number, because the mean of its divisors is an integer number (5178348018).

Almost surely, 2^15535044051 is an apocalyptic number.

15535044051 is a deficient number, since it is larger than the sum of its proper divisors (5178348021).

15535044051 is an equidigital number, since it uses as much as digits as its factorization.

15535044051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178348020.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 15535044051 in words is "fifteen billion, five hundred thirty-five million, forty-four thousand, fifty-one".