20740806458 has 8 divisors (see below), whose sum is σ = 31126686240. Its totient is φ = 10365244380.

The previous prime is 20740806431. The next prime is 20740806461. The reversal of 20740806458 is 85460804702.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574398 + ... + 2582441.

It is an arithmetic number, because the mean of its divisors is an integer number (3890835780).

Almost surely, 2^20740806458 is an apocalyptic number.

20740806458 is a deficient number, since it is larger than the sum of its proper divisors (10385879782).

20740806458 is a wasteful number, since it uses less digits than its factorization.

20740806458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158852.

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 20740806458 in words is "twenty billion, seven hundred forty million, eight hundred six thousand, four hundred fifty-eight".