21236036063146 has 4 divisors (see below), whose sum is σ = 31854054094722. Its totient is φ = 10618018031572.

The previous prime is 21236036063087. The next prime is 21236036063161. The reversal of 21236036063146 is 64136063063212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17038229252121 + 4197806811025 = 4127739^2 + 2048855^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5309009015785 + ... + 5309009015788.

Almost surely, 2^{21236036063146} is an apocalyptic number.

21236036063146 is a deficient number, since it is larger than the sum of its proper divisors (10618018031576).

21236036063146 is a wasteful number, since it uses less digits than its factorization.

21236036063146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10618018031575.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 21236036063146 in words is "twenty-one trillion, two hundred thirty-six billion, thirty-six million, sixty-three thousand, one hundred forty-six".