4421640051 has 6 divisors (see below), whose sum is σ = 6386813420. Its totient is φ = 2947760028.

The previous prime is 4421640031. The next prime is 4421640059. The reversal of 4421640051 is 1500461244.

4421640051 is a `hidden beast` number, since 44 + 216 + 400 + 5 + 1 = 666.

It is not a de Polignac number, because 4421640051 - 2²³ = 4413251443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4421639997 and 4421640024.

It is not an unprimeable number, because it can be changed into a prime (4421640059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 245646661 + ... + 245646678.

Almost surely, 2^4421640051 is an apocalyptic number.

4421640051 is a deficient number, since it is larger than the sum of its proper divisors (1965173369).

4421640051 is a wasteful number, since it uses less digits than its factorization.

4421640051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491293345 (or 491293342 counting only the distinct ones).

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

The square root of 4421640051 is about 66495.4137591458. The cubic root of 4421640051 is about 1641.3245361204.

The spelling of 4421640051 in words is "four billion, four hundred twenty-one million, six hundred forty thousand, fifty-one".