155126738811 has 64 divisors (see below), whose sum is σ = 244677818880. Its totient is φ = 86353827840.

The previous prime is 155126738807. The next prime is 155126738813. The reversal of 155126738811 is 118837621551.

It is a happy number.

It is not a de Polignac number, because 155126738811 - 2² = 155126738807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155126738813) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40259361 + ... + 40263213.

It is an arithmetic number, because the mean of its divisors is an integer number (3823090920).

Almost surely, 2^155126738811 is an apocalyptic number.

155126738811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155126738811 is a deficient number, since it is larger than the sum of its proper divisors (89551080069).

155126738811 is a wasteful number, since it uses less digits than its factorization.

155126738811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5596.

The product of its digits is 403200, while the sum is 48.

The spelling of 155126738811 in words is "one hundred fifty-five billion, one hundred twenty-six million, seven hundred thirty-eight thousand, eight hundred eleven".