6172107840 has 84 divisors (see below), whose sum is σ = 21229489164. Its totient is φ = 1645894656.

The previous prime is 6172107827. The next prime is 6172107853. The reversal of 6172107840 is 487012716.

It is an interprime number because it is at equal distance from previous prime (6172107827) and next prime (6172107853).

It can be written as a sum of positive squares in 2 ways, for example, as 4112400384 + 2059707456 = 64128^2 + 45384^2 .

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 = 6172107795 and 6172107804.

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, 1068667 + ... + 1074426.

Almost surely, 2^6172107840 is an apocalyptic number.

6172107840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6172107840 is an abundant number, since it is smaller than the sum of its proper divisors (15057381324).

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

6172107840 is a wasteful number, since it uses less digits than its factorization.

6172107840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143116 (or 2143103 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 6172107840 is about 78562.7636988415. The cubic root of 6172107840 is about 1834.3315470457.

The spelling of 6172107840 in words is "six billion, one hundred seventy-two million, one hundred seven thousand, eight hundred forty".