11977407901 has 2 divisors, whose sum is σ = 11977407902. Its totient is φ = 11977407900.

The previous prime is 11977407887. The next prime is 11977407983. The reversal of 11977407901 is 10970477911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10292305401 + 1685102500 = 101451^2 + 41050^2 .

It is a cyclic number.

It is not a de Polignac number, because 11977407901 - 2⁷ = 11977407773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11977407991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5988703950 + 5988703951.

It is an arithmetic number, because the mean of its divisors is an integer number (5988703951).

Almost surely, 2^11977407901 is an apocalyptic number.

It is an amenable number.

11977407901 is a deficient number, since it is larger than the sum of its proper divisors (1).

11977407901 is an equidigital number, since it uses as much as digits as its factorization.

11977407901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 46.

The spelling of 11977407901 in words is "eleven billion, nine hundred seventy-seven million, four hundred seven thousand, nine hundred one".