215154113204 has 48 divisors (see below), whose sum is σ = 386453168640. Its totient is φ = 104754810720.

The previous prime is 215154113191. The next prime is 215154113231. The reversal of 215154113204 is 402311451512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111420119 + ... + 111422049.

It is an arithmetic number, because the mean of its divisors is an integer number (8051107680).

Almost surely, 2^215154113204 is an apocalyptic number.

It is an amenable number.

215154113204 is a deficient number, since it is larger than the sum of its proper divisors (171299055436).

215154113204 is a wasteful number, since it uses less digits than its factorization.

215154113204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620 (or 3618 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 215154113204 its reverse (402311451512), we get a palindrome (617465564716).

The spelling of 215154113204 in words is "two hundred fifteen billion, one hundred fifty-four million, one hundred thirteen thousand, two hundred four".