20029274574821 has 8 divisors (see below), whose sum is σ = 20130052675200. Its totient is φ = 19928497759632.

The previous prime is 20029274574797. The next prime is 20029274574851. The reversal of 20029274574821 is 12847547292002.

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

It is a cyclic number.

It is not a de Polignac number, because 20029274574821 - 2²² = 20029270380517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20029274574851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53745896 + ... + 54117278.

It is an arithmetic number, because the mean of its divisors is an integer number (2516256584400).

Almost surely, 2^{20029274574821} is an apocalyptic number.

It is an amenable number.

20029274574821 is a deficient number, since it is larger than the sum of its proper divisors (100778100379).

20029274574821 is a wasteful number, since it uses less digits than its factorization.

20029274574821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642595.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 20029274574821 in words is "twenty trillion, twenty-nine billion, two hundred seventy-four million, five hundred seventy-four thousand, eight hundred twenty-one".