747666655031 has 2 divisors, whose sum is σ = 747666655032. Its totient is φ = 747666655030.

The previous prime is 747666655027. The next prime is 747666655051. The reversal of 747666655031 is 130556666747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 747666655031 - 2² = 747666655027 is a prime.

It is a super-2 number, since 2×747666655031² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747666655051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373833327515 + 373833327516.

It is an arithmetic number, because the mean of its divisors is an integer number (373833327516).

Almost surely, 2^747666655031 is an apocalyptic number.

747666655031 is a deficient number, since it is larger than the sum of its proper divisors (1).

747666655031 is an equidigital number, since it uses as much as digits as its factorization.

747666655031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 56.

The spelling of 747666655031 in words is "seven hundred forty-seven billion, six hundred sixty-six million, six hundred fifty-five thousand, thirty-one".