464774774646 has 128 divisors (see below), whose sum is σ = 1181827325952. Its totient is φ = 118537344000.

The previous prime is 464774774623. The next prime is 464774774683. The reversal of 464774774646 is 646477477464.

464774774646 is a nontrivial binomial coefficient, being equal to C(964132, 2).

It is a super-2 number, since 2×464774774646² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25058136 + ... + 25076676.

It is an arithmetic number, because the mean of its divisors is an integer number (9233025984).

Almost surely, 2^464774774646 is an apocalyptic number.

464774774646 is the 964131-st triangular number and also the 482066-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 464774774646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590913662976).

464774774646 is an abundant number, since it is smaller than the sum of its proper divisors (717052551306).

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

464774774646 is a wasteful number, since it uses less digits than its factorization.

464774774646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20078.

The product of its digits is 531062784, while the sum is 66.

The spelling of 464774774646 in words is "four hundred sixty-four billion, seven hundred seventy-four million, seven hundred seventy-four thousand, six hundred forty-six".