764466751961 has 6 divisors (see below), whose sum is σ = 840281636586. Its totient is φ = 694969774400.

The previous prime is 764466751943. The next prime is 764466751999. The reversal of 764466751961 is 169157664467.

It can be written as a sum of positive squares in only one way, i.e., 758912776336 + 5553975625 = 871156^2 + 74525^2 .

It is not a de Polignac number, because 764466751961 - 2⁶ = 764466751897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 764466751894 and 764466751903.

It is not an unprimeable number, because it can be changed into a prime (764466751901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3158953400 + ... + 3158953641.

It is an arithmetic number, because the mean of its divisors is an integer number (140046939431).

Almost surely, 2^764466751961 is an apocalyptic number.

It is an amenable number.

764466751961 is a deficient number, since it is larger than the sum of its proper divisors (75814884625).

764466751961 is a wasteful number, since it uses less digits than its factorization.

764466751961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317907063 (or 6317907052 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 62.

The spelling of 764466751961 in words is "seven hundred sixty-four billion, four hundred sixty-six million, seven hundred fifty-one thousand, nine hundred sixty-one".