401256377237 has 2 divisors, whose sum is σ = 401256377238. Its totient is φ = 401256377236.

The previous prime is 401256377147. The next prime is 401256377267. The reversal of 401256377237 is 732773652104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212213163556 + 189043213681 = 460666^2 + 434791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401256377237 is a prime.

It is a super-2 number, since 2×401256377237² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401256377191 and 401256377200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401256377267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200628188618 + 200628188619.

It is an arithmetic number, because the mean of its divisors is an integer number (200628188619).

Almost surely, 2^401256377237 is an apocalyptic number.

It is an amenable number.

401256377237 is a deficient number, since it is larger than the sum of its proper divisors (1).

401256377237 is an equidigital number, since it uses as much as digits as its factorization.

401256377237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 401256377237 in words is "four hundred one billion, two hundred fifty-six million, three hundred seventy-seven thousand, two hundred thirty-seven".