20893649974354 has 8 divisors (see below), whose sum is σ = 31447439040780. Its totient is φ = 10411170294096.

The previous prime is 20893649974343. The next prime is 20893649974363. The reversal of 20893649974354 is 45347994639802.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17383254278329 + 3510395696025 = 4169323^2 + 1873605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17827345809 + ... + 17827346980.

Almost surely, 2^{20893649974354} is an apocalyptic number.

20893649974354 is a deficient number, since it is larger than the sum of its proper divisors (10553789066426).

20893649974354 is a wasteful number, since it uses less digits than its factorization.

20893649974354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35654693084.

The product of its (nonzero) digits is 1410877440, while the sum is 73.

The spelling of 20893649974354 in words is "twenty trillion, eight hundred ninety-three billion, six hundred forty-nine million, nine hundred seventy-four thousand, three hundred fifty-four".