15540097430 has 128 divisors (see below), whose sum is σ = 34651846656. Its totient is φ = 4937011200.

The previous prime is 15540097429. The next prime is 15540097439. The reversal of 15540097430 is 3479004551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15540097439) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3187895 + ... + 3192765.

It is an arithmetic number, because the mean of its divisors is an integer number (270717552).

Almost surely, 2^15540097430 is an apocalyptic number.

15540097430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15540097430 is an abundant number, since it is smaller than the sum of its proper divisors (19111749226).

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

15540097430 is a wasteful number, since it uses less digits than its factorization.

15540097430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 15540097430 in words is "fifteen billion, five hundred forty million, ninety-seven thousand, four hundred thirty".