1401909967631 has 2 divisors, whose sum is σ = 1401909967632. Its totient is φ = 1401909967630.

The previous prime is 1401909967573. The next prime is 1401909967651. The reversal of 1401909967631 is 1367699091041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401909967631 is a prime.

It is a super-2 number, since 2×1401909967631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401909967651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700954983815 + 700954983816.

It is an arithmetic number, because the mean of its divisors is an integer number (700954983816).

Almost surely, 2^{1401909967631} is an apocalyptic number.

1401909967631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401909967631 is an equidigital number, since it uses as much as digits as its factorization.

1401909967631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The spelling of 1401909967631 in words is "one trillion, four hundred one billion, nine hundred nine million, nine hundred sixty-seven thousand, six hundred thirty-one".