1540550403512 has 16 divisors (see below), whose sum is σ = 2888737792200. Its totient is φ = 770220325600.

The previous prime is 1540550403479. The next prime is 1540550403547. The reversal of 1540550403512 is 2153040550451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6740087 + ... + 6964902.

Almost surely, 2^{1540550403512} is an apocalyptic number.

It is an amenable number.

1540550403512 is a deficient number, since it is larger than the sum of its proper divisors (1348187388688).

1540550403512 is a wasteful number, since it uses less digits than its factorization.

1540550403512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719046 (or 13719042 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 1540550403512 its reverse (2153040550451), we get a palindrome (3693590953963).

The spelling of 1540550403512 in words is "one trillion, five hundred forty billion, five hundred fifty million, four hundred three thousand, five hundred twelve".