15400452000420 has 144 divisors (see below), whose sum is σ = 48399572435760. Its totient is φ = 3959100730368.

The previous prime is 15400452000413. The next prime is 15400452000433. The reversal of 15400452000420 is 2400025400451.

15400452000420 is a `hidden beast` number, since 15 + 400 + 4 + 5 + 200 + 0 + 42 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3629116440576 + 11771335559844 = 1905024^2 + 3430938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1149642 + ... + 5667678.

It is an arithmetic number, because the mean of its divisors is an integer number (336108141915).

Almost surely, 2^{15400452000420} is an apocalyptic number.

15400452000420 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 15400452000420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24199786217880).

15400452000420 is an abundant number, since it is smaller than the sum of its proper divisors (32999120435340).

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

15400452000420 is a wasteful number, since it uses less digits than its factorization.

15400452000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518734 (or 4518729 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 15400452000420 its reverse (2400025400451), we get a palindrome (17800477400871).

The spelling of 15400452000420 in words is "fifteen trillion, four hundred billion, four hundred fifty-two million, four hundred twenty", and thus it is an aban number.