615456412464 has 20 divisors (see below), whose sum is σ = 1589929065656. Its totient is φ = 205152137472.

The previous prime is 615456412463. The next prime is 615456412499. The reversal of 615456412464 is 464214654516.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 12822008593 = 615456412464 / (6 + 1 + 5 + 4 + 5 + 6 + 4 + 1 + 2 + 4 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (615456412463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411004249 + ... + 6411004344.

Almost surely, 2^615456412464 is an apocalyptic number.

It is an amenable number.

615456412464 is an abundant number, since it is smaller than the sum of its proper divisors (974472653192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

615456412464 is a wasteful number, since it uses less digits than its factorization.

615456412464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822008604 (or 12822008598 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 48.

The spelling of 615456412464 in words is "six hundred fifteen billion, four hundred fifty-six million, four hundred twelve thousand, four hundred sixty-four".