3978075737627 has 2 divisors, whose sum is σ = 3978075737628. Its totient is φ = 3978075737626.

The previous prime is 3978075737561. The next prime is 3978075737681. The reversal of 3978075737627 is 7267375708793.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3978075737627 is a prime.

It is a super-2 number, since 2×3978075737627² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3978075730627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989037868813 + 1989037868814.

It is an arithmetic number, because the mean of its divisors is an integer number (1989037868814).

Almost surely, 2^{3978075737627} is an apocalyptic number.

3978075737627 is a deficient number, since it is larger than the sum of its proper divisors (1).

3978075737627 is an equidigital number, since it uses as much as digits as its factorization.

3978075737627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653456160, while the sum is 71.

The spelling of 3978075737627 in words is "three trillion, nine hundred seventy-eight billion, seventy-five million, seven hundred thirty-seven thousand, six hundred twenty-seven".