20617628674 has 8 divisors (see below), whose sum is σ = 32271071040. Its totient is φ = 9860604996.

The previous prime is 20617628671. The next prime is 20617628687. The reversal of 20617628674 is 47682671602.

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

It is a super-2 number, since 2×20617628674² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20617628671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224104614 + ... + 224104705.

It is an arithmetic number, because the mean of its divisors is an integer number (4033883880).

Almost surely, 2^20617628674 is an apocalyptic number.

20617628674 is a deficient number, since it is larger than the sum of its proper divisors (11653442366).

20617628674 is a wasteful number, since it uses less digits than its factorization.

20617628674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448209344.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 20617628674 in words is "twenty billion, six hundred seventeen million, six hundred twenty-eight thousand, six hundred seventy-four".