1540545204540 has 48 divisors (see below), whose sum is σ = 4313582138880. Its totient is φ = 410806762560.

The previous prime is 1540545204479. The next prime is 1540545204553. The reversal of 1540545204540 is 454025450451.

It is a super-2 number, since 2×1540545204540² (a number of 25 digits) contains 22 as substring.

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, 7365121 + ... + 7571399.

It is an arithmetic number, because the mean of its divisors is an integer number (89866294560).

Almost surely, 2^{1540545204540} is an apocalyptic number.

1540545204540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540545204540 is an abundant number, since it is smaller than the sum of its proper divisors (2773036934340).

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

1540545204540 is a wasteful number, since it uses less digits than its factorization.

1540545204540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330762 (or 330760 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 39.

The spelling of 1540545204540 in words is "one trillion, five hundred forty billion, five hundred forty-five million, two hundred four thousand, five hundred forty".