15540419052 has 24 divisors (see below), whose sum is σ = 40289975600. Its totient is φ = 5180139648.

The previous prime is 15540419003. The next prime is 15540419053. The reversal of 15540419052 is 25091404551.

15540419052 is a `hidden beast` number, since 15 + 5 + 404 + 190 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15540418998 and 15540419016.

It is not an unprimeable number, because it can be changed into a prime (15540419053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71946277 + ... + 71946492.

Almost surely, 2^15540419052 is an apocalyptic number.

15540419052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15540419052 is an abundant number, since it is smaller than the sum of its proper divisors (24749556548).

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

15540419052 is a wasteful number, since it uses less digits than its factorization.

15540419052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143892782 (or 143892774 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 15540419052 in words is "fifteen billion, five hundred forty million, four hundred nineteen thousand, fifty-two".