215522401542 has 64 divisors (see below), whose sum is σ = 532245427200. Its totient is φ = 57955594368.

The previous prime is 215522401541. The next prime is 215522401543. The reversal of 215522401542 is 245104225512.

It is an interprime number because it is at equal distance from previous prime (215522401541) and next prime (215522401543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215522401541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3045138 + ... + 3115109.

It is an arithmetic number, because the mean of its divisors is an integer number (8316334800).

Almost surely, 2^215522401542 is an apocalyptic number.

215522401542 is an abundant number, since it is smaller than the sum of its proper divisors (316723025658).

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

215522401542 is a wasteful number, since it uses less digits than its factorization.

215522401542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160290 (or 6160276 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 215522401542 in words is "two hundred fifteen billion, five hundred twenty-two million, four hundred one thousand, five hundred forty-two".