72976428079 has 4 divisors (see below), whose sum is σ = 72980316520. Its totient is φ = 72972539640.

The previous prime is 72976428067. The next prime is 72976428097. The reversal of 72976428079 is 97082467927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97082467927 = 70843 ⋅1370389.

It is a cyclic number.

It is not a de Polignac number, because 72976428079 - 2⁵ = 72976428047 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 (72676428079) 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, 1915932 + ... + 1953649.

It is an arithmetic number, because the mean of its divisors is an integer number (18245079130).

Almost surely, 2^72976428079 is an apocalyptic number.

72976428079 is a deficient number, since it is larger than the sum of its proper divisors (3888441).

72976428079 is a wasteful number, since it uses less digits than its factorization.

72976428079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888440.

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 72976428079 in words is "seventy-two billion, nine hundred seventy-six million, four hundred twenty-eight thousand, seventy-nine".