21074854737 has 8 divisors (see below), whose sum is σ = 28101427200. Its totient is φ = 14049092720.

The previous prime is 21074854733. The next prime is 21074854771. The reversal of 21074854737 is 73745847012.

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 21074854737 - 2² = 21074854733 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21074854733) 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, 139089 + ... + 247982.

It is an arithmetic number, because the mean of its divisors is an integer number (3512678400).

Almost surely, 2^21074854737 is an apocalyptic number.

It is an amenable number.

21074854737 is a deficient number, since it is larger than the sum of its proper divisors (7026572463).

21074854737 is a wasteful number, since it uses less digits than its factorization.

21074854737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405223.

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 21074854737 in words is "twenty-one billion, seventy-four million, eight hundred fifty-four thousand, seven hundred thirty-seven".