72150279154 has 4 divisors (see below), whose sum is σ = 108225418734. Its totient is φ = 36075139576.

The previous prime is 72150279151. The next prime is 72150279163. The reversal of 72150279154 is 45197205127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45197205127 = 2777 ⋅16275551.

It can be written as a sum of positive squares in only one way, i.e., 69582526225 + 2567752929 = 263785^2 + 50673^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72150279154.

It is not an unprimeable number, because it can be changed into a prime (72150279151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18037569787 + ... + 18037569790.

Almost surely, 2^72150279154 is an apocalyptic number.

72150279154 is a deficient number, since it is larger than the sum of its proper divisors (36075139580).

72150279154 is a wasteful number, since it uses less digits than its factorization.

72150279154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36075139579.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 72150279154 in words is "seventy-two billion, one hundred fifty million, two hundred seventy-nine thousand, one hundred fifty-four".