1401077451391 has 2 divisors, whose sum is σ = 1401077451392. Its totient is φ = 1401077451390.

The previous prime is 1401077451353. The next prime is 1401077451461. The reversal of 1401077451391 is 1931547701041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401077451391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401077451341) 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, 700538725695 + 700538725696.

It is an arithmetic number, because the mean of its divisors is an integer number (700538725696).

Almost surely, 2^{1401077451391} is an apocalyptic number.

1401077451391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401077451391 is an equidigital number, since it uses as much as digits as its factorization.

1401077451391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 1401077451391 in words is "one trillion, four hundred one billion, seventy-seven million, four hundred fifty-one thousand, three hundred ninety-one".