2154516503415 has 32 divisors (see below), whose sum is σ = 3503670806016. Its totient is φ = 1130333742720.

The previous prime is 2154516503407. The next prime is 2154516503449. The reversal of 2154516503415 is 5143056154512.

It is not a de Polignac number, because 2154516503415 - 2³ = 2154516503407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1811524 + ... + 2755113.

It is an arithmetic number, because the mean of its divisors is an integer number (109489712688).

Almost surely, 2^{2154516503415} is an apocalyptic number.

2154516503415 is a deficient number, since it is larger than the sum of its proper divisors (1349154302601).

2154516503415 is a wasteful number, since it uses less digits than its factorization.

2154516503415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567159.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 2154516503415 in words is "two trillion, one hundred fifty-four billion, five hundred sixteen million, five hundred three thousand, four hundred fifteen".