15400344536 has 16 divisors (see below), whose sum is σ = 29656069440. Its totient is φ = 7492059360.

The previous prime is 15400344497. The next prime is 15400344539. The reversal of 15400344536 is 63544300451.

It is a super-2 number, since 2×15400344536² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15400344496 and 15400344505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15400344539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26013800 + ... + 26014391.

It is an arithmetic number, because the mean of its divisors is an integer number (1853504340).

Almost surely, 2^15400344536 is an apocalyptic number.

It is an amenable number.

15400344536 is a deficient number, since it is larger than the sum of its proper divisors (14255724904).

15400344536 is a wasteful number, since it uses less digits than its factorization.

15400344536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52028234 (or 52028230 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 15400344536 its reverse (63544300451), we get a palindrome (78944644987).

The spelling of 15400344536 in words is "fifteen billion, four hundred million, three hundred forty-four thousand, five hundred thirty-six".