15402203042220 has 288 divisors, whose sum is σ = 52265473041600. Its totient is φ = 3648577830912.

The previous prime is 15402203042197. The next prime is 15402203042249. The reversal of 15402203042220 is 2224030220451.

15402203042220 is a `hidden beast` number, since 1 + 5 + 402 + 2 + 0 + 30 + 4 + 2 + 220 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15147252 + ... + 16132068.

It is an arithmetic number, because the mean of its divisors is an integer number (181477336950).

Almost surely, 2^{15402203042220} is an apocalyptic number.

15402203042220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15402203042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26132736520800).

15402203042220 is an abundant number, since it is smaller than the sum of its proper divisors (36863269999380).

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

15402203042220 is a wasteful number, since it uses less digits than its factorization.

15402203042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985137 (or 985132 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 15402203042220 its reverse (2224030220451), we get a palindrome (17626233262671).

The spelling of 15402203042220 in words is "fifteen trillion, four hundred two billion, two hundred three million, forty-two thousand, two hundred twenty".