615940042536 has 960 divisors, whose sum is σ = 2306561241600. Its totient is φ = 149442527232.

The previous prime is 615940042513. The next prime is 615940042541. The reversal of 615940042536 is 635240049516.

615940042536 is a `hidden beast` number, since 6 + 1 + 594 + 0 + 0 + 4 + 2 + 53 + 6 = 666.

615940042536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×615940042536² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 615940042491 and 615940042500.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 800961960 + ... + 800962728.

It is an arithmetic number, because the mean of its divisors is an integer number (2402667960).

Almost surely, 2^615940042536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 615940042536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153280620800).

615940042536 is an abundant number, since it is smaller than the sum of its proper divisors (1690621199064).

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

615940042536 is a wasteful number, since it uses less digits than its factorization.

615940042536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 615940042536 in words is "six hundred fifteen billion, nine hundred forty million, forty-two thousand, five hundred thirty-six".