15386240015540 has 48 divisors (see below), whose sum is σ = 32490205780032. Its totient is φ = 6120442814976.

The previous prime is 15386240015533. The next prime is 15386240015551. The reversal of 15386240015540 is 4551004268351.

It is a junction number, because it is equal to n+sod(n) for n = 15386240015491 and 15386240015500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2089772 + ... + 5927868.

It is an arithmetic number, because the mean of its divisors is an integer number (676879287084).

Almost surely, 2^{15386240015540} is an apocalyptic number.

15386240015540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15386240015540 is an abundant number, since it is smaller than the sum of its proper divisors (17103965764492).

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

15386240015540 is a wasteful number, since it uses less digits than its factorization.

15386240015540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839216 (or 3839214 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 15386240015540 in words is "fifteen trillion, three hundred eighty-six billion, two hundred forty million, fifteen thousand, five hundred forty".