72974377741 has 2 divisors, whose sum is σ = 72974377742. Its totient is φ = 72974377740.

The previous prime is 72974377643. The next prime is 72974377807. The reversal of 72974377741 is 14777347927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40076036100 + 32898341641 = 200190^2 + 181379^2 .

It is a cyclic number.

It is not a de Polignac number, because 72974377741 - 2¹³ = 72974369549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72974377241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36487188870 + 36487188871.

It is an arithmetic number, because the mean of its divisors is an integer number (36487188871).

Almost surely, 2^72974377741 is an apocalyptic number.

It is an amenable number.

72974377741 is a deficient number, since it is larger than the sum of its proper divisors (1).

72974377741 is an equidigital number, since it uses as much as digits as its factorization.

72974377741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14521248, while the sum is 58.

The spelling of 72974377741 in words is "seventy-two billion, nine hundred seventy-four million, three hundred seventy-seven thousand, seven hundred forty-one".