72974377807 has 2 divisors, whose sum is σ = 72974377808. Its totient is φ = 72974377806.

The previous prime is 72974377741. The next prime is 72974377831. The reversal of 72974377807 is 70877347927.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72974377807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72974377877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36487188903 + 36487188904.

It is an arithmetic number, because the mean of its divisors is an integer number (36487188904).

Almost surely, 2^72974377807 is an apocalyptic number.

72974377807 is a deficient number, since it is larger than the sum of its proper divisors (1).

72974377807 is an equidigital number, since it uses as much as digits as its factorization.

72974377807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29042496, while the sum is 61.

The spelling of 72974377807 in words is "seventy-two billion, nine hundred seventy-four million, three hundred seventy-seven thousand, eight hundred seven".