21514420131545 has 16 divisors (see below), whose sum is σ = 29821057210368. Its totient is φ = 14726448003840.

The previous prime is 21514420131539. The next prime is 21514420131601. The reversal of 21514420131545 is 54513102441512.

It is not a de Polignac number, because 21514420131545 - 2³⁶ = 21445700654809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21514420131499 and 21514420131508.

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, 11505036569 + ... + 11505038438.

It is an arithmetic number, because the mean of its divisors is an integer number (1863816075648).

Almost surely, 2^{21514420131545} is an apocalyptic number.

It is an amenable number.

21514420131545 is a deficient number, since it is larger than the sum of its proper divisors (8306637078823).

21514420131545 is a wasteful number, since it uses less digits than its factorization.

21514420131545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23010075040.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 21514420131545 in words is "twenty-one trillion, five hundred fourteen billion, four hundred twenty million, one hundred thirty-one thousand, five hundred forty-five".