20161622626 has 8 divisors (see below), whose sum is σ = 30541864284. Its totient is φ = 9981001200.

The previous prime is 20161622623. The next prime is 20161622629. The reversal of 20161622626 is 62622616102.

It is an interprime number because it is at equal distance from previous prime (20161622623) and next prime (20161622629).

It can be written as a sum of positive squares in 2 ways, for example, as 19811970025 + 349652601 = 140755^2 + 18699^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20161622591 and 20161622600.

It is not an unprimeable number, because it can be changed into a prime (20161622623) 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, 49904805 + ... + 49905208.

Almost surely, 2^20161622626 is an apocalyptic number.

20161622626 is a deficient number, since it is larger than the sum of its proper divisors (10380241658).

20161622626 is a wasteful number, since it uses less digits than its factorization.

20161622626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99810116.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 20161622626 in words is "twenty billion, one hundred sixty-one million, six hundred twenty-two thousand, six hundred twenty-six".