15400153540 has 12 divisors (see below), whose sum is σ = 32340322476. Its totient is φ = 6160061408.

The previous prime is 15400153523. The next prime is 15400153589. The reversal of 15400153540 is 4535100451.

It can be written as a sum of positive squares in 2 ways, for example, as 12308571136 + 3091582404 = 110944^2 + 55602^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15400153499 and 15400153508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385003819 + ... + 385003858.

It is an arithmetic number, because the mean of its divisors is an integer number (2695026873).

Almost surely, 2^15400153540 is an apocalyptic number.

15400153540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15400153540 is an abundant number, since it is smaller than the sum of its proper divisors (16940168936).

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

15400153540 is a wasteful number, since it uses less digits than its factorization.

15400153540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770007686 (or 770007684 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 15400153540 its reverse (4535100451), we get a palindrome (19935253991).

The spelling of 15400153540 in words is "fifteen billion, four hundred million, one hundred fifty-three thousand, five hundred forty".