70631366761 has 2 divisors, whose sum is σ = 70631366762. Its totient is φ = 70631366760.

The previous prime is 70631366713. The next prime is 70631366801. The reversal of 70631366761 is 16766313607.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64477905625 + 6153461136 = 253925^2 + 78444^2 .

It is a cyclic number.

It is not a de Polignac number, because 70631366761 - 2⁷ = 70631366633 is a prime.

It is a super-2 number, since 2×70631366761² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70631366461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35315683380 + 35315683381.

It is an arithmetic number, because the mean of its divisors is an integer number (35315683381).

Almost surely, 2^70631366761 is an apocalyptic number.

It is an amenable number.

70631366761 is a deficient number, since it is larger than the sum of its proper divisors (1).

70631366761 is an equidigital number, since it uses as much as digits as its factorization.

70631366761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 70631366761 in words is "seventy billion, six hundred thirty-one million, three hundred sixty-six thousand, seven hundred sixty-one".