37890639993643 has 2 divisors, whose sum is σ = 37890639993644. Its totient is φ = 37890639993642.

The previous prime is 37890639993533. The next prime is 37890639993659. The reversal of 37890639993643 is 34639993609873.

It is a strong prime.

It is an emirp because it is prime and its reverse (34639993609873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37890639993643 - 2³⁷ = 37753201040171 is a prime.

It is a super-2 number, since 2×37890639993643² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37890639193643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18945319996821 + 18945319996822.

It is an arithmetic number, because the mean of its divisors is an integer number (18945319996822).

Almost surely, 2^{37890639993643} is an apocalyptic number.

37890639993643 is a deficient number, since it is larger than the sum of its proper divisors (1).

37890639993643 is an equidigital number, since it uses as much as digits as its factorization.

37890639993643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4285540224, while the sum is 79.

The spelling of 37890639993643 in words is "thirty-seven trillion, eight hundred ninety billion, six hundred thirty-nine million, nine hundred ninety-three thousand, six hundred forty-three".