4051201644 has 72 divisors (see below), whose sum is σ = 12081026048. Its totient is φ = 1120145760.

The previous prime is 4051201633. The next prime is 4051201657. The reversal of 4051201644 is 4461021504.

4051201644 is a `hidden beast` number, since 4 + 0 + 5 + 12 + 0 + 1 + 644 = 666.

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, 251482 + ... + 267105.

Almost surely, 2^4051201644 is an apocalyptic number.

It is an amenable number.

4051201644 is an abundant number, since it is smaller than the sum of its proper divisors (8029824404).

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

4051201644 is a wasteful number, since it uses less digits than its factorization.

4051201644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518635 (or 518630 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4051201644 is about 63649.0506135009. The cubic root of 4051201644 is about 1594.1454847646.

The spelling of 4051201644 in words is "four billion, fifty-one million, two hundred one thousand, six hundred forty-four".