15122542155 has 32 divisors (see below), whose sum is σ = 27752530944. Its totient is φ = 6888191616.

The previous prime is 15122542153. The next prime is 15122542177. The reversal of 15122542155 is 55124522151.

It is not a de Polignac number, because 15122542155 - 2¹ = 15122542153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15122542153) 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, 230887 + ... + 289056.

It is an arithmetic number, because the mean of its divisors is an integer number (867266592).

Almost surely, 2^15122542155 is an apocalyptic number.

15122542155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15122542155 is a deficient number, since it is larger than the sum of its proper divisors (12629988789).

15122542155 is a wasteful number, since it uses less digits than its factorization.

15122542155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520235.

The product of its digits is 20000, while the sum is 33.

The spelling of 15122542155 in words is "fifteen billion, one hundred twenty-two million, five hundred forty-two thousand, one hundred fifty-five".