7727041644 has 48 divisors (see below), whose sum is σ = 20617363200. Its totient is φ = 2206449216.

The previous prime is 7727041639. The next prime is 7727041661. The reversal of 7727041644 is 4461407277.

It is a happy number.

It is a super-2 number, since 2×7727041644² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 7727041596 and 7727041605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124567 + ... + 175985.

It is an arithmetic number, because the mean of its divisors is an integer number (429528400).

Almost surely, 2^7727041644 is an apocalyptic number.

It is an amenable number.

7727041644 is an abundant number, since it is smaller than the sum of its proper divisors (12890321556).

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

7727041644 is a wasteful number, since it uses less digits than its factorization.

7727041644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53222 (or 53220 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 42.

The square root of 7727041644 is about 87903.5928958538. The cubic root of 7727041644 is about 1976.9897497990.

The spelling of 7727041644 in words is "seven billion, seven hundred twenty-seven million, forty-one thousand, six hundred forty-four".