215542406050118 has 16 divisors (see below), whose sum is σ = 369502194610464. Its totient is φ = 92375085104640.

The previous prime is 215542406050093. The next prime is 215542406050157. The reversal of 215542406050118 is 811050604245512.

It is a super-2 number, since 2×215542406050118² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13474523 + ... + 24751718.

It is an arithmetic number, because the mean of its divisors is an integer number (23093887163154).

Almost surely, 2^{215542406050118} is an apocalyptic number.

215542406050118 is a deficient number, since it is larger than the sum of its proper divisors (153959788560346).

215542406050118 is a wasteful number, since it uses less digits than its factorization.

215542406050118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38629007.

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 215542406050118 in words is "two hundred fifteen trillion, five hundred forty-two billion, four hundred six million, fifty thousand, one hundred eighteen".