20490426683290 has 16 divisors (see below), whose sum is σ = 36892198621440. Its totient is φ = 8194074986320.

The previous prime is 20490426683263. The next prime is 20490426683291. The reversal of 20490426683290 is 9238662409402.

It is not an unprimeable number, because it can be changed into a prime (20490426683291) 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, 261919810 + ... + 261998029.

It is an arithmetic number, because the mean of its divisors is an integer number (2305762413840).

Almost surely, 2^{20490426683290} is an apocalyptic number.

20490426683290 is a deficient number, since it is larger than the sum of its proper divisors (16401771938150).

20490426683290 is a wasteful number, since it uses less digits than its factorization.

20490426683290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523921757.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 20490426683290 in words is "twenty trillion, four hundred ninety billion, four hundred twenty-six million, six hundred eighty-three thousand, two hundred ninety".