6155415540 has 36 divisors (see below), whose sum is σ = 18671427684. Its totient is φ = 1641444096.

The previous prime is 6155415533. The next prime is 6155415569. The reversal of 6155415540 is 455145516.

6155415540 is a `hidden beast` number, since 61 + 5 + 5 + 41 + 554 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2111218704 + 4044196836 = 45948^2 + 63594^2 .

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

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 = 6155415495 and 6155415504.

It is a congruent number.

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, 17098197 + ... + 17098556.

It is an arithmetic number, because the mean of its divisors is an integer number (518650769).

Almost surely, 2^6155415540 is an apocalyptic number.

6155415540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6155415540 is an abundant number, since it is smaller than the sum of its proper divisors (12516012144).

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

6155415540 is a wasteful number, since it uses less digits than its factorization.

6155415540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34196768 (or 34196763 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 6155415540 is about 78456.4563308846. The cubic root of 6155415540 is about 1832.6764205870.

The spelling of 6155415540 in words is "six billion, one hundred fifty-five million, four hundred fifteen thousand, five hundred forty".