15204148146 has 128 divisors (see below), whose sum is σ = 37490791680. Its totient is φ = 4528742400.

The previous prime is 15204148133. The next prime is 15204148153. The reversal of 15204148146 is 64184140251.

15204148146 is a `hidden beast` number, since 1 + 520 + 4 + 14 + 81 + 46 = 666.

It is a super-2 number, since 2×15204148146² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15204148146.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22591266 + ... + 22591938.

It is an arithmetic number, because the mean of its divisors is an integer number (292896810).

Almost surely, 2^15204148146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15204148146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18745395840).

15204148146 is an abundant number, since it is smaller than the sum of its proper divisors (22286643534).

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

15204148146 is a wasteful number, since it uses less digits than its factorization.

15204148146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 15204148146 its reverse (64184140251), we get a palindrome (79388288397).

The spelling of 15204148146 in words is "fifteen billion, two hundred four million, one hundred forty-eight thousand, one hundred forty-six".