38870697693943 has 2 divisors, whose sum is σ = 38870697693944. Its totient is φ = 38870697693942.

The previous prime is 38870697693889. The next prime is 38870697693953. The reversal of 38870697693943 is 34939679607883.

It is a strong prime.

It is an emirp because it is prime and its reverse (34939679607883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38870697693943 - 2²⁹ = 38870160823031 is a prime.

It is a super-2 number, since 2×38870697693943² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38870697693953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19435348846971 + 19435348846972.

It is an arithmetic number, because the mean of its divisors is an integer number (19435348846972).

Almost surely, 2^{38870697693943} is an apocalyptic number.

38870697693943 is a deficient number, since it is larger than the sum of its proper divisors (1).

38870697693943 is an equidigital number, since it uses as much as digits as its factorization.

38870697693943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8888527872, while the sum is 82.

The spelling of 38870697693943 in words is "thirty-eight trillion, eight hundred seventy billion, six hundred ninety-seven million, six hundred ninety-three thousand, nine hundred forty-three".