215104154202 has 240 divisors, whose sum is σ = 566569238400. Its totient is φ = 60995464992.

The previous prime is 215104154189. The next prime is 215104154233. The reversal of 215104154202 is 202451401512.

It is a happy number.

215104154202 is a `hidden beast` number, since 2 + 15 + 104 + 1 + 542 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 541823868 + ... + 541824264.

It is an arithmetic number, because the mean of its divisors is an integer number (2360705160).

Almost surely, 2^215104154202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215104154202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283284619200).

215104154202 is an abundant number, since it is smaller than the sum of its proper divisors (351465084198).

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

215104154202 is an frugal number, since it uses more digits than its factorization.

215104154202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 215104154202 its reverse (202451401512), we get a palindrome (417555555714).

The spelling of 215104154202 in words is "two hundred fifteen billion, one hundred four million, one hundred fifty-four thousand, two hundred two".