21514001245355 has 16 divisors (see below), whose sum is σ = 25921597415040. Its totient is φ = 17141434975872.

The previous prime is 21514001245349. The next prime is 21514001245367. The reversal of 21514001245355 is 55354210041512.

It is a cyclic number.

It is not a de Polignac number, because 21514001245355 - 2¹⁰ = 21514001244331 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4361939 + ... + 7877468.

It is an arithmetic number, because the mean of its divisors is an integer number (1620099838440).

Almost surely, 2^{21514001245355} is an apocalyptic number.

21514001245355 is a deficient number, since it is larger than the sum of its proper divisors (4407596169685).

21514001245355 is a wasteful number, since it uses less digits than its factorization.

21514001245355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12240838.

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 21514001245355 its reverse (55354210041512), we get a palindrome (76868211286867).

The spelling of 21514001245355 in words is "twenty-one trillion, five hundred fourteen billion, one million, two hundred forty-five thousand, three hundred fifty-five".