15151611222 has 128 divisors (see below), whose sum is σ = 37902574080. Its totient is φ = 4446161280.

The previous prime is 15151611197. The next prime is 15151611271. The reversal of 15151611222 is 22211615151.

It is a happy number.

15151611222 is a `hidden beast` number, since 1 + 515 + 16 + 112 + 22 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4987488 + ... + 4990524.

It is an arithmetic number, because the mean of its divisors is an integer number (296113860).

Almost surely, 2^15151611222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15151611222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18951287040).

15151611222 is an abundant number, since it is smaller than the sum of its proper divisors (22750962858).

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

15151611222 is a wasteful number, since it uses less digits than its factorization.

15151611222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323 (or 3317 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The spelling of 15151611222 in words is "fifteen billion, one hundred fifty-one million, six hundred eleven thousand, two hundred twenty-two".