4556779644 has 12 divisors (see below), whose sum is σ = 10632485864. Its totient is φ = 1518926544.

The previous prime is 4556779639. The next prime is 4556779649. The reversal of 4556779644 is 4469776554.

It is an interprime number because it is at equal distance from previous prime (4556779639) and next prime (4556779649).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4556779649) 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, 189865807 + ... + 189865830.

Almost surely, 2^4556779644 is an apocalyptic number.

It is an amenable number.

4556779644 is an abundant number, since it is smaller than the sum of its proper divisors (6075706220).

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

4556779644 is a wasteful number, since it uses less digits than its factorization.

4556779644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379731644 (or 379731642 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 57.

The square root of 4556779644 is about 67503.9231748793. The cubic root of 4556779644 is about 1657.8784097652.

The spelling of 4556779644 in words is "four billion, five hundred fifty-six million, seven hundred seventy-nine thousand, six hundred forty-four".