72126655154 has 16 divisors (see below), whose sum is σ = 108341246520. Its totient is φ = 36012933120.

The previous prime is 72126655099. The next prime is 72126655187. The reversal of 72126655154 is 45155662127.

It can be written as a sum of positive squares in 4 ways, for example, as 34538364025 + 37588291129 = 185845^2 + 193877^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11057414 + ... + 11063934.

Almost surely, 2^72126655154 is an apocalyptic number.

72126655154 is a deficient number, since it is larger than the sum of its proper divisors (36214591366).

72126655154 is a wasteful number, since it uses less digits than its factorization.

72126655154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13405.

The product of its digits is 504000, while the sum is 44.

The spelling of 72126655154 in words is "seventy-two billion, one hundred twenty-six million, six hundred fifty-five thousand, one hundred fifty-four".