20444919635 has 12 divisors (see below), whose sum is σ = 28039907088. Its totient is φ = 14018793408.

The previous prime is 20444919611. The next prime is 20444919643. The reversal of 20444919635 is 53691944402.

It is not a de Polignac number, because 20444919635 - 2⁶ = 20444919571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20444919635.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 833831 + ... + 857999.

It is an arithmetic number, because the mean of its divisors is an integer number (2336658924).

Almost surely, 2^20444919635 is an apocalyptic number.

20444919635 is a deficient number, since it is larger than the sum of its proper divisors (7594987453).

20444919635 is an frugal number, since it uses more digits than its factorization.

20444919635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48350 (or 24181 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 20444919635 in words is "twenty billion, four hundred forty-four million, nine hundred nineteen thousand, six hundred thirty-five".