72974344951 has 2 divisors, whose sum is σ = 72974344952. Its totient is φ = 72974344950.

The previous prime is 72974344931. The next prime is 72974344991. The reversal of 72974344951 is 15944347927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72974344951 - 2¹⁹ = 72973820663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72974344892 and 72974344901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72974344901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36487172475 + 36487172476.

It is an arithmetic number, because the mean of its divisors is an integer number (36487172476).

Almost surely, 2^72974344951 is an apocalyptic number.

72974344951 is a deficient number, since it is larger than the sum of its proper divisors (1).

72974344951 is an equidigital number, since it uses as much as digits as its factorization.

72974344951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The spelling of 72974344951 in words is "seventy-two billion, nine hundred seventy-four million, three hundred forty-four thousand, nine hundred fifty-one".