215464225461442 has 16 divisors (see below), whose sum is σ = 325908622440000. Its totient is φ = 106830432120880.

The previous prime is 215464225461413. The next prime is 215464225461473. The reversal of 215464225461442 is 244164522464512.

It is a super-2 number, since 2×215464225461442² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215464225461442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603355984 + ... + 603712987.

It is an arithmetic number, because the mean of its divisors is an integer number (20369288902500).

Almost surely, 2^{215464225461442} is an apocalyptic number.

215464225461442 is a deficient number, since it is larger than the sum of its proper divisors (110444396978558).

215464225461442 is a wasteful number, since it uses less digits than its factorization.

215464225461442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207069721.

The product of its digits is 14745600, while the sum is 52.

The spelling of 215464225461442 in words is "two hundred fifteen trillion, four hundred sixty-four billion, two hundred twenty-five million, four hundred sixty-one thousand, four hundred forty-two".