72936442951 has 4 divisors (see below), whose sum is σ = 73419465904. Its totient is φ = 72453420000.

The previous prime is 72936442919. The next prime is 72936442963. The reversal of 72936442951 is 15924463927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15924463927 = 2887 ⋅5515921.

It is a cyclic number.

It is not a de Polignac number, because 72936442951 - 2⁵ = 72936442919 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 (72936442151) 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, 241511250 + ... + 241511551.

It is an arithmetic number, because the mean of its divisors is an integer number (18354866476).

Almost surely, 2^72936442951 is an apocalyptic number.

72936442951 is a deficient number, since it is larger than the sum of its proper divisors (483022953).

72936442951 is a wasteful number, since it uses less digits than its factorization.

72936442951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483022952.

The product of its digits is 3265920, while the sum is 52.

The spelling of 72936442951 in words is "seventy-two billion, nine hundred thirty-six million, four hundred forty-two thousand, nine hundred fifty-one".