15400456434 has 96 divisors (see below), whose sum is σ = 38774526336. Its totient is φ = 4365826560.

The previous prime is 15400456429. The next prime is 15400456447. The reversal of 15400456434 is 43465400451.

15400456434 is a `hidden beast` number, since 1 + 5 + 4 + 0 + 0 + 4 + 5 + 643 + 4 = 666.

15400456434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 548424 + ... + 575820.

It is an arithmetic number, because the mean of its divisors is an integer number (403901316).

Almost surely, 2^15400456434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15400456434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19387263168).

15400456434 is an abundant number, since it is smaller than the sum of its proper divisors (23374069902).

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

15400456434 is a wasteful number, since it uses less digits than its factorization.

15400456434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27600 (or 27597 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 15400456434 its reverse (43465400451), we get a palindrome (58865856885).

The spelling of 15400456434 in words is "fifteen billion, four hundred million, four hundred fifty-six thousand, four hundred thirty-four".