126515633155 has 4 divisors (see below), whose sum is σ = 151818759792. Its totient is φ = 101212506520.

The previous prime is 126515633143. The next prime is 126515633177. The reversal of 126515633155 is 551336515621.

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

It is not a de Polignac number, because 126515633155 - 2²¹ = 126513536003 is a prime.

It is a super-2 number, since 2×126515633155² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12651563311 + ... + 12651563320.

It is an arithmetic number, because the mean of its divisors is an integer number (37954689948).

Almost surely, 2^126515633155 is an apocalyptic number.

126515633155 is a deficient number, since it is larger than the sum of its proper divisors (25303126637).

126515633155 is an equidigital number, since it uses as much as digits as its factorization.

126515633155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25303126636.

The product of its digits is 405000, while the sum is 43.

The spelling of 126515633155 in words is "one hundred twenty-six billion, five hundred fifteen million, six hundred thirty-three thousand, one hundred fifty-five".