72150015799 has 4 divisors (see below), whose sum is σ = 74100016264. Its totient is φ = 70200015336.

The previous prime is 72150015739. The next prime is 72150015811. The reversal of 72150015799 is 99751005127.

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

It is a cyclic number.

It is not a de Polignac number, because 72150015799 - 2¹³ = 72150007607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72150015719) 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, 975000177 + ... + 975000250.

It is an arithmetic number, because the mean of its divisors is an integer number (18525004066).

Almost surely, 2^72150015799 is an apocalyptic number.

72150015799 is a deficient number, since it is larger than the sum of its proper divisors (1950000465).

72150015799 is a wasteful number, since it uses less digits than its factorization.

72150015799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950000464.

The product of its (nonzero) digits is 198450, while the sum is 46.

The spelling of 72150015799 in words is "seventy-two billion, one hundred fifty million, fifteen thousand, seven hundred ninety-nine".