37994996723 has 2 divisors, whose sum is σ = 37994996724. Its totient is φ = 37994996722.

The previous prime is 37994996623. The next prime is 37994996747. The reversal of 37994996723 is 32769949973.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32769949973) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37994996723 - 2²⁴ = 37978219507 is a prime.

It is not a weakly prime, because it can be changed into another prime (37994996783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18997498361 + 18997498362.

It is an arithmetic number, because the mean of its divisors is an integer number (18997498362).

Almost surely, 2^37994996723 is an apocalyptic number.

37994996723 is a deficient number, since it is larger than the sum of its proper divisors (1).

37994996723 is an equidigital number, since it uses as much as digits as its factorization.

37994996723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138883248, while the sum is 68.

The spelling of 37994996723 in words is "thirty-seven billion, nine hundred ninety-four million, nine hundred ninety-six thousand, seven hundred twenty-three".