20502626646 has 8 divisors (see below), whose sum is σ = 41005253304. Its totient is φ = 6834208880.

The previous prime is 20502626623. The next prime is 20502626687. The reversal of 20502626646 is 64662620502.

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

20502626646 is an admirable number.

It is a congruent number.

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, 1708552215 + ... + 1708552226.

It is an arithmetic number, because the mean of its divisors is an integer number (5125656663).

Almost surely, 2^20502626646 is an apocalyptic number.

20502626646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20502626646 is a wasteful number, since it uses less digits than its factorization.

20502626646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417104446.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 20502626646 in words is "twenty billion, five hundred two million, six hundred twenty-six thousand, six hundred forty-six".