1540214550165 has 16 divisors (see below), whose sum is σ = 2470196837376. Its totient is φ = 819496574400.

The previous prime is 1540214550157. The next prime is 1540214550187. The reversal of 1540214550165 is 5610554120451.

It is not a de Polignac number, because 1540214550165 - 2³ = 1540214550157 is a prime.

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, 121942581 + ... + 121955210.

It is an arithmetic number, because the mean of its divisors is an integer number (154387302336).

Almost surely, 2^{1540214550165} is an apocalyptic number.

1540214550165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540214550165 is a deficient number, since it is larger than the sum of its proper divisors (929982287211).

1540214550165 is a wasteful number, since it uses less digits than its factorization.

1540214550165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243898220.

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 1540214550165 in words is "one trillion, five hundred forty billion, two hundred fourteen million, five hundred fifty thousand, one hundred sixty-five".