215540562042 has 48 divisors (see below), whose sum is σ = 502974992520. Its totient is φ = 66313973376.

The previous prime is 215540562011. The next prime is 215540562059. The reversal of 215540562042 is 240265045512.

215540562042 is a `hidden beast` number, since 2 + 1 + 5 + 54 + 0 + 562 + 0 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 211130141121 + 4410420921 = 459489^2 + 66411^2 .

It is a junction number, because it is equal to n+sod(n) for n = 215540561988 and 215540562006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2892184 + ... + 2965772.

Almost surely, 2^215540562042 is an apocalyptic number.

215540562042 is an abundant number, since it is smaller than the sum of its proper divisors (287434430478).

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

215540562042 is a wasteful number, since it uses less digits than its factorization.

215540562042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86127 (or 86124 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 215540562042 in words is "two hundred fifteen billion, five hundred forty million, five hundred sixty-two thousand, forty-two".