1401626745731 has 2 divisors, whose sum is σ = 1401626745732. Its totient is φ = 1401626745730.

The previous prime is 1401626745703. The next prime is 1401626745793. The reversal of 1401626745731 is 1375476261041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401626745731 is a prime.

It is a super-2 number, since 2×1401626745731² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1401626745331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700813372865 + 700813372866.

It is an arithmetic number, because the mean of its divisors is an integer number (700813372866).

Almost surely, 2^{1401626745731} is an apocalyptic number.

1401626745731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401626745731 is an equidigital number, since it uses as much as digits as its factorization.

1401626745731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 1401626745731 in words is "one trillion, four hundred one billion, six hundred twenty-six million, seven hundred forty-five thousand, seven hundred thirty-one".