20645464274294 has 8 divisors (see below), whose sum is σ = 30969248801760. Its totient is φ = 10322381340376.

The previous prime is 20645464274233. The next prime is 20645464274311. The reversal of 20645464274294 is 49247246454602.

It is a happy number.

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

It is a super-2 number, since 2×20645464274294² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 175324814 + ... + 175442529.

It is an arithmetic number, because the mean of its divisors is an integer number (3871156100220).

Almost surely, 2^{20645464274294} is an apocalyptic number.

20645464274294 is a deficient number, since it is larger than the sum of its proper divisors (10323784527466).

20645464274294 is a wasteful number, since it uses less digits than its factorization.

20645464274294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350796774.

The product of its (nonzero) digits is 92897280, while the sum is 59.

The spelling of 20645464274294 in words is "twenty trillion, six hundred forty-five billion, four hundred sixty-four million, two hundred seventy-four thousand, two hundred ninety-four".