373693745081 has 2 divisors, whose sum is σ = 373693745082. Its totient is φ = 373693745080.

The previous prime is 373693745077. The next prime is 373693745101. The reversal of 373693745081 is 180547396373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300501312400 + 73192432681 = 548180^2 + 270541^2 .

It is an emirp because it is prime and its reverse (180547396373) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 373693745081 - 2² = 373693745077 is a prime.

It is a super-2 number, since 2×373693745081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (373693745011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186846872540 + 186846872541.

It is an arithmetic number, because the mean of its divisors is an integer number (186846872541).

Almost surely, 2^373693745081 is an apocalyptic number.

It is an amenable number.

373693745081 is a deficient number, since it is larger than the sum of its proper divisors (1).

373693745081 is an equidigital number, since it uses as much as digits as its factorization.

373693745081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 373693745081 in words is "three hundred seventy-three billion, six hundred ninety-three million, seven hundred forty-five thousand, eighty-one".