37812121161583 has 2 divisors, whose sum is σ = 37812121161584. Its totient is φ = 37812121161582.

The previous prime is 37812121161553. The next prime is 37812121161601. The reversal of 37812121161583 is 38516112121873.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37812121161583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37812121161523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18906060580791 + 18906060580792.

It is an arithmetic number, because the mean of its divisors is an integer number (18906060580792).

Almost surely, 2^{37812121161583} is an apocalyptic number.

37812121161583 is a deficient number, since it is larger than the sum of its proper divisors (1).

37812121161583 is an equidigital number, since it uses as much as digits as its factorization.

37812121161583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The spelling of 37812121161583 in words is "thirty-seven trillion, eight hundred twelve billion, one hundred twenty-one million, one hundred sixty-one thousand, five hundred eighty-three".