13721527155 has 16 divisors (see below), whose sum is σ = 25090792704. Its totient is φ = 6272698080.

The previous prime is 13721527153. The next prime is 13721527177. The reversal of 13721527155 is 55172512731.

It is a happy number.

It is not a de Polignac number, because 13721527155 - 2¹ = 13721527153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13721527153) 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, 65340501 + ... + 65340710.

It is an arithmetic number, because the mean of its divisors is an integer number (1568174544).

Almost surely, 2^13721527155 is an apocalyptic number.

13721527155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13721527155 is a deficient number, since it is larger than the sum of its proper divisors (11369265549).

13721527155 is a wasteful number, since it uses less digits than its factorization.

13721527155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130681226.

The product of its digits is 73500, while the sum is 39.

The spelling of 13721527155 in words is "thirteen billion, seven hundred twenty-one million, five hundred twenty-seven thousand, one hundred fifty-five".