33636421494 has 24 divisors (see below), whose sum is σ = 78484984032. Its totient is φ = 10349668080.

The previous prime is 33636421477. The next prime is 33636421531. The reversal of 33636421494 is 49412463633.

33636421494 is a `hidden beast` number, since 3 + 3 + 636 + 4 + 2 + 1 + 4 + 9 + 4 = 666.

It is a super-2 number, since 2×33636421494² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71872462 + ... + 71872929.

It is an arithmetic number, because the mean of its divisors is an integer number (3270207668).

Almost surely, 2^33636421494 is an apocalyptic number.

33636421494 is an abundant number, since it is smaller than the sum of its proper divisors (44848562538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33636421494 is a wasteful number, since it uses less digits than its factorization.

33636421494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143745412 (or 143745409 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 45.

The spelling of 33636421494 in words is "thirty-three billion, six hundred thirty-six million, four hundred twenty-one thousand, four hundred ninety-four".