15400434654 has 24 divisors (see below), whose sum is σ = 36401027832. Its totient is φ = 4666798320.

The previous prime is 15400434481. The next prime is 15400434661. The reversal of 15400434654 is 45643400451.

15400434654 is a `hidden beast` number, since 154 + 0 + 0 + 43 + 465 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38889789 + ... + 38890184.

It is an arithmetic number, because the mean of its divisors is an integer number (1516709493).

Almost surely, 2^15400434654 is an apocalyptic number.

15400434654 is an abundant number, since it is smaller than the sum of its proper divisors (21000593178).

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

15400434654 is a wasteful number, since it uses less digits than its factorization.

15400434654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77779992 (or 77779989 counting only the distinct ones).

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

It can be divided in two parts, 15400 and 434654, that added together give a palindrome (450054).

The spelling of 15400434654 in words is "fifteen billion, four hundred million, four hundred thirty-four thousand, six hundred fifty-four".