72150015793 has 4 divisors (see below), whose sum is σ = 73685122560. Its totient is φ = 70614909028.

The previous prime is 72150015739. The next prime is 72150015811. The reversal of 72150015793 is 39751005127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39751005127 = 69457 ⋅572311.

It is a cyclic number.

It is not a de Polignac number, because 72150015793 - 2¹⁷ = 72149884721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72150015493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767553313 + ... + 767553406.

It is an arithmetic number, because the mean of its divisors is an integer number (18421280640).

Almost surely, 2^72150015793 is an apocalyptic number.

It is an amenable number.

72150015793 is a deficient number, since it is larger than the sum of its proper divisors (1535106767).

72150015793 is a wasteful number, since it uses less digits than its factorization.

72150015793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535106766.

The product of its (nonzero) digits is 66150, while the sum is 40.

The spelling of 72150015793 in words is "seventy-two billion, one hundred fifty million, fifteen thousand, seven hundred ninety-three".