15023454502540 has 96 divisors (see below), whose sum is σ = 36105642639360. Its totient is φ = 5200400889600.

The previous prime is 15023454502349. The next prime is 15023454502559. The reversal of 15023454502540 is 4520545432051.

It is a junction number, because it is equal to n+sod(n) for n = 15023454502493 and 15023454502502.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16129932 + ... + 17035891.

It is an arithmetic number, because the mean of its divisors is an integer number (376100444160).

Almost surely, 2^{15023454502540} is an apocalyptic number.

15023454502540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15023454502540 is an abundant number, since it is smaller than the sum of its proper divisors (21082188136820).

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

15023454502540 is a wasteful number, since it uses less digits than its factorization.

15023454502540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33165943 (or 33165941 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 15023454502540 its reverse (4520545432051), we get a palindrome (19543999934591).

The spelling of 15023454502540 in words is "fifteen trillion, twenty-three billion, four hundred fifty-four million, five hundred two thousand, five hundred forty".