15514540140 has 72 divisors (see below), whose sum is σ = 47748904560. Its totient is φ = 3761098880.

The previous prime is 15514540127. The next prime is 15514540141. The reversal of 15514540140 is 4104541551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 15514540098 and 15514540107.

It is not an unprimeable number, because it can be changed into a prime (15514540141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061235 + ... + 1075754.

It is an arithmetic number, because the mean of its divisors is an integer number (663179230).

Almost surely, 2^15514540140 is an apocalyptic number.

15514540140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15514540140 is an abundant number, since it is smaller than the sum of its proper divisors (32234364420).

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

15514540140 is a wasteful number, since it uses less digits than its factorization.

15514540140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137023 (or 2137010 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 15514540140 in words is "fifteen billion, five hundred fourteen million, five hundred forty thousand, one hundred forty".