55966947731 has 2 divisors, whose sum is σ = 55966947732. Its totient is φ = 55966947730.

The previous prime is 55966947709. The next prime is 55966947763. The reversal of 55966947731 is 13774966955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55966947731 - 2⁶ = 55966947667 is a prime.

It is a super-2 number, since 2×55966947731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55966947931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27983473865 + 27983473866.

It is an arithmetic number, because the mean of its divisors is an integer number (27983473866).

Almost surely, 2^55966947731 is an apocalyptic number.

55966947731 is a deficient number, since it is larger than the sum of its proper divisors (1).

55966947731 is an equidigital number, since it uses as much as digits as its factorization.

55966947731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42865200, while the sum is 62.

The spelling of 55966947731 in words is "fifty-five billion, nine hundred sixty-six million, nine hundred forty-seven thousand, seven hundred thirty-one".