20606262644 has 24 divisors (see below), whose sum is σ = 39349691136. Its totient is φ = 9363992000.

The previous prime is 20606262637. The next prime is 20606262671. The reversal of 20606262644 is 44626260602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20606262598 and 20606262607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110429 + ... + 231099.

It is an arithmetic number, because the mean of its divisors is an integer number (1639570464).

Almost surely, 2^20606262644 is an apocalyptic number.

It is an amenable number.

20606262644 is a deficient number, since it is larger than the sum of its proper divisors (18743428492).

20606262644 is a wasteful number, since it uses less digits than its factorization.

20606262644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124567 (or 124565 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 20606262644 in words is "twenty billion, six hundred six million, two hundred sixty-two thousand, six hundred forty-four".