72353756131 has 2 divisors, whose sum is σ = 72353756132. Its totient is φ = 72353756130.

The previous prime is 72353756087. The next prime is 72353756141. The reversal of 72353756131 is 13165735327.

It is a strong prime.

It is an emirp because it is prime and its reverse (13165735327) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72353756131 is a prime.

It is a super-2 number, since 2×72353756131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72353756141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36176878065 + 36176878066.

It is an arithmetic number, because the mean of its divisors is an integer number (36176878066).

Almost surely, 2^72353756131 is an apocalyptic number.

72353756131 is a deficient number, since it is larger than the sum of its proper divisors (1).

72353756131 is an equidigital number, since it uses as much as digits as its factorization.

72353756131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 43.

The spelling of 72353756131 in words is "seventy-two billion, three hundred fifty-three million, seven hundred fifty-six thousand, one hundred thirty-one".