20226684639 has 16 divisors (see below), whose sum is σ = 30860803328. Its totient is φ = 11543409792.

The previous prime is 20226684613. The next prime is 20226684649. The reversal of 20226684639 is 93648662202.

It is not a de Polignac number, because 20226684639 - 2¹² = 20226680543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226684649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595402 + ... + 628455.

It is an arithmetic number, because the mean of its divisors is an integer number (1928800208).

Almost surely, 2^20226684639 is an apocalyptic number.

20226684639 is a deficient number, since it is larger than the sum of its proper divisors (10634118689).

20226684639 is a wasteful number, since it uses less digits than its factorization.

20226684639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224654.

The product of its (nonzero) digits is 1492992, while the sum is 48.

The spelling of 20226684639 in words is "twenty billion, two hundred twenty-six million, six hundred eighty-four thousand, six hundred thirty-nine".