6115571920 has 40 divisors (see below), whose sum is σ = 14222018304. Its totient is φ = 2445658752.

The previous prime is 6115571909. The next prime is 6115571921. The reversal of 6115571920 is 291755116.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6115571920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6115571921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571257 + ... + 581863.

Almost surely, 2^6115571920 is an apocalyptic number.

It is an amenable number.

6115571920 is an abundant number, since it is smaller than the sum of its proper divisors (8106446384).

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

6115571920 is a wasteful number, since it uses less digits than its factorization.

6115571920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17827 (or 17821 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 37.

The square root of 6115571920 is about 78202.1222218425. The cubic root of 6115571920 is about 1828.7135912305.

The spelling of 6115571920 in words is "six billion, one hundred fifteen million, five hundred seventy-one thousand, nine hundred twenty".