15412021450 has 72 divisors (see below), whose sum is σ = 34056338112. Its totient is φ = 5171654880.

The previous prime is 15412021433. The next prime is 15412021453. The reversal of 15412021450 is 5412021451.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (15412021453) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48229 + ... + 182071.

It is an arithmetic number, because the mean of its divisors is an integer number (473004696).

Almost surely, 2^15412021450 is an apocalyptic number.

15412021450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15412021450 is an abundant number, since it is smaller than the sum of its proper divisors (18644316662).

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

15412021450 is a wasteful number, since it uses less digits than its factorization.

15412021450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133916 (or 133904 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Subtracting from 15412021450 its reverse (5412021451), we obtain a palindrome (9999999999).

The spelling of 15412021450 in words is "fifteen billion, four hundred twelve million, twenty-one thousand, four hundred fifty".