15400202144 has 24 divisors (see below), whose sum is σ = 30347577540. Its totient is φ = 7692880896.

The previous prime is 15400202143. The next prime is 15400202159. The reversal of 15400202144 is 44120200451.

It can be written as a sum of positive squares in 2 ways, for example, as 14203872400 + 1196329744 = 119180^2 + 34588^2 .

It is not an unprimeable number, because it can be changed into a prime (15400202143) by changing a digit.

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, 190889 + ... + 259304.

Almost surely, 2^15400202144 is an apocalyptic number.

It is an amenable number.

15400202144 is a deficient number, since it is larger than the sum of its proper divisors (14947375396).

15400202144 is a wasteful number, since it uses less digits than its factorization.

15400202144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451272 (or 451264 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 15400202144 its reverse (44120200451), we get a palindrome (59520402595).

The spelling of 15400202144 in words is "fifteen billion, four hundred million, two hundred two thousand, one hundred forty-four".