6261016644 has 36 divisors (see below), whose sum is σ = 15831414144. Its totient is φ = 2086352112.

The previous prime is 6261016631. The next prime is 6261016669. The reversal of 6261016644 is 4466101626.

6261016644 is a `hidden beast` number, since 6 + 2 + 6 + 1 + 0 + 1 + 6 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6261016599 and 6261016608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97129 + ... + 148175.

It is an arithmetic number, because the mean of its divisors is an integer number (439761504).

Almost surely, 2^6261016644 is an apocalyptic number.

It is an amenable number.

6261016644 is an abundant number, since it is smaller than the sum of its proper divisors (9570397500).

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

6261016644 is a wasteful number, since it uses less digits than its factorization.

6261016644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54464 (or 54459 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 6261016644 is about 79126.5862021103. The cubic root of 6261016644 is about 1843.0973984014.

The spelling of 6261016644 in words is "six billion, two hundred sixty-one million, sixteen thousand, six hundred forty-four".