21514012040155 has 16 divisors (see below), whose sum is σ = 25832087734464. Its totient is φ = 17201028695040.

The previous prime is 21514012040117. The next prime is 21514012040203. The reversal of 21514012040155 is 55104021041512.

It is not a de Polignac number, because 21514012040155 - 2¹⁵ = 21514012007387 is a prime.

It is a Duffinian 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, 155180227 + ... + 155318803.

It is an arithmetic number, because the mean of its divisors is an integer number (1614505483404).

Almost surely, 2^{21514012040155} is an apocalyptic number.

21514012040155 is a deficient number, since it is larger than the sum of its proper divisors (4318075694309).

21514012040155 is a wasteful number, since it uses less digits than its factorization.

21514012040155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156726.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 21514012040155 its reverse (55104021041512), we get a palindrome (76618033081667).

The spelling of 21514012040155 in words is "twenty-one trillion, five hundred fourteen billion, twelve million, forty thousand, one hundred fifty-five".