15540345339 has 16 divisors (see below), whose sum is σ = 21400625952. Its totient is φ = 10025503488.

The previous prime is 15540345259. The next prime is 15540345341. The reversal of 15540345339 is 93354304551.

It is not a de Polignac number, because 15540345339 - 2¹⁶ = 15540279803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15540345339.

It is not an unprimeable number, because it can be changed into a prime (15540345349) 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, 657832 + ... + 681045.

It is an arithmetic number, because the mean of its divisors is an integer number (1337539122).

Almost surely, 2^15540345339 is an apocalyptic number.

15540345339 is a deficient number, since it is larger than the sum of its proper divisors (5860280613).

15540345339 is a wasteful number, since it uses less digits than its factorization.

15540345339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339006.

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 15540345339 in words is "fifteen billion, five hundred forty million, three hundred forty-five thousand, three hundred thirty-nine".