15021400218 has 16 divisors (see below), whose sum is σ = 32773964256. Its totient is φ = 4551939440.

The previous prime is 15021400189. The next prime is 15021400259. The reversal of 15021400218 is 81200412051.

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, 113798421 + ... + 113798552.

It is an arithmetic number, because the mean of its divisors is an integer number (2048372766).

Almost surely, 2^15021400218 is an apocalyptic number.

15021400218 is an abundant number, since it is smaller than the sum of its proper divisors (17752564038).

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

15021400218 is a wasteful number, since it uses less digits than its factorization.

15021400218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227596989.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 15021400218 its reverse (81200412051), we get a palindrome (96221812269).

The spelling of 15021400218 in words is "fifteen billion, twenty-one million, four hundred thousand, two hundred eighteen".