1377155822401 has 2 divisors, whose sum is σ = 1377155822402. Its totient is φ = 1377155822400.

The previous prime is 1377155822381. The next prime is 1377155822411. The reversal of 1377155822401 is 1042285517731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 927900652176 + 449255170225 = 963276^2 + 670265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377155822401 - 2²¹ = 1377153725249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1377155822411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688577911200 + 688577911201.

It is an arithmetic number, because the mean of its divisors is an integer number (688577911201).

Almost surely, 2^{1377155822401} is an apocalyptic number.

It is an amenable number.

1377155822401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377155822401 is an equidigital number, since it uses as much as digits as its factorization.

1377155822401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 1377155822401 in words is "one trillion, three hundred seventy-seven billion, one hundred fifty-five million, eight hundred twenty-two thousand, four hundred one".