747766615465 has 4 divisors (see below), whose sum is σ = 897319938564. Its totient is φ = 598213292368.

The previous prime is 747766615457. The next prime is 747766615487. The reversal of 747766615465 is 564516667747.

747766615465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564516667747 = 154277 ⋅3659111.

It can be written as a sum of positive squares in 2 ways, for example, as 89609225104 + 658157390361 = 299348^2 + 811269^2 .

It is a cyclic number.

It is not a de Polignac number, because 747766615465 - 2³ = 747766615457 is a prime.

It is a super-2 number, since 2×747766615465² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747766615397 and 747766615406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74776661542 + ... + 74776661551.

It is an arithmetic number, because the mean of its divisors is an integer number (224329984641).

Almost surely, 2^747766615465 is an apocalyptic number.

It is an amenable number.

747766615465 is a deficient number, since it is larger than the sum of its proper divisors (149553323099).

747766615465 is a wasteful number, since it uses less digits than its factorization.

747766615465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149553323098.

The product of its digits is 177811200, while the sum is 64.

The spelling of 747766615465 in words is "seven hundred forty-seven billion, seven hundred sixty-six million, six hundred fifteen thousand, four hundred sixty-five".