21146542636035 has 16 divisors (see below), whose sum is σ = 33836388109056. Its totient is φ = 11277516108768.

The previous prime is 21146542636033. The next prime is 21146542636111. The reversal of 21146542636035 is 53063624564112.

It is not a de Polignac number, because 21146542636035 - 2¹ = 21146542636033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21146542636033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39724519 + ... + 40253328.

It is an arithmetic number, because the mean of its divisors is an integer number (2114774256816).

Almost surely, 2^{21146542636035} is an apocalyptic number.

21146542636035 is a deficient number, since it is larger than the sum of its proper divisors (12689845473021).

21146542636035 is a wasteful number, since it uses less digits than its factorization.

21146542636035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79995482.

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 21146542636035 in words is "twenty-one trillion, one hundred forty-six billion, five hundred forty-two million, six hundred thirty-six thousand, thirty-five".