20296637669 has 16 divisors (see below), whose sum is σ = 25472495616. Its totient is φ = 15710814000.

The previous prime is 20296637629. The next prime is 20296637687. The reversal of 20296637669 is 96673669202.

It is not a de Polignac number, because 20296637669 - 2¹² = 20296633573 is a prime.

It is a super-2 number, since 2×20296637669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20296637629) 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, 861197 + ... + 884450.

It is an arithmetic number, because the mean of its divisors is an integer number (1592030976).

Almost surely, 2^20296637669 is an apocalyptic number.

It is an amenable number.

20296637669 is a deficient number, since it is larger than the sum of its proper divisors (5175857947).

20296637669 is a wasteful number, since it uses less digits than its factorization.

20296637669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745816.

The product of its (nonzero) digits is 8817984, while the sum is 56.

The spelling of 20296637669 in words is "twenty billion, two hundred ninety-six million, six hundred thirty-seven thousand, six hundred sixty-nine".