156605022540 has 120 divisors (see below), whose sum is σ = 494405703792. Its totient is φ = 41495276160.

The previous prime is 156605022523. The next prime is 156605022559. The reversal of 156605022540 is 45220506651.

156605022540 is a `hidden beast` number, since 1 + 5 + 6 + 60 + 50 + 2 + 2 + 540 = 666.

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 = 156605022495 and 156605022504.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53526 + ... + 562205.

Almost surely, 2^156605022540 is an apocalyptic number.

156605022540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156605022540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247202851896).

156605022540 is an abundant number, since it is smaller than the sum of its proper divisors (337800681252).

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

156605022540 is a wasteful number, since it uses less digits than its factorization.

156605022540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615909 (or 615898 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 156605022540 in words is "one hundred fifty-six billion, six hundred five million, twenty-two thousand, five hundred forty".