15540540045 has 16 divisors (see below), whose sum is σ = 24887032512. Its totient is φ = 8280898560.

The previous prime is 15540540023. The next prime is 15540540079. The reversal of 15540540045 is 54004504551.

It is not a de Polignac number, because 15540540045 - 2¹⁷ = 15540408973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15540539988 and 15540540015.

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, 444436 + ... + 478125.

It is an arithmetic number, because the mean of its divisors is an integer number (1555439532).

Almost surely, 2^15540540045 is an apocalyptic number.

15540540045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15540540045 is a deficient number, since it is larger than the sum of its proper divisors (9346492467).

15540540045 is a wasteful number, since it uses less digits than its factorization.

15540540045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923692.

The product of its (nonzero) digits is 40000, while the sum is 33.

The spelling of 15540540045 in words is "fifteen billion, five hundred forty million, five hundred forty thousand, forty-five".