15120545349 has 32 divisors (see below), whose sum is σ = 25418421504. Its totient is φ = 7781137920.

The previous prime is 15120545309. The next prime is 15120545351. The reversal of 15120545349 is 94354502151.

It is a happy number.

It is not a de Polignac number, because 15120545349 - 2¹² = 15120541253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120545309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664254 + ... + 686639.

It is an arithmetic number, because the mean of its divisors is an integer number (794325672).

Almost surely, 2^15120545349 is an apocalyptic number.

It is an amenable number.

15120545349 is a deficient number, since it is larger than the sum of its proper divisors (10297876155).

15120545349 is a wasteful number, since it uses less digits than its factorization.

15120545349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350957.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 15120545349 in words is "fifteen billion, one hundred twenty million, five hundred forty-five thousand, three hundred forty-nine".