464444662644 has 72 divisors (see below), whose sum is σ = 1220307728640. Its totient is φ = 154457207424.

The previous prime is 464444662639. The next prime is 464444662667. The reversal of 464444662644 is 446266444464.

464444662644 is a `hidden beast` number, since 4 + 6 + 4 + 4 + 4 + 4 + 6 + 626 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130884 + ... + 972635.

Almost surely, 2^464444662644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 464444662644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610153864320).

464444662644 is an abundant number, since it is smaller than the sum of its proper divisors (755863065996).

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

464444662644 is a wasteful number, since it uses less digits than its factorization.

464444662644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103971 (or 1103957 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 54.

The spelling of 464444662644 in words is "four hundred sixty-four billion, four hundred forty-four million, six hundred sixty-two thousand, six hundred forty-four".