20349629376 has 112 divisors (see below), whose sum is σ = 54308093568. Its totient is φ = 6724684800.

The previous prime is 20349629347. The next prime is 20349629383. The reversal of 20349629376 is 67392694302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21625066 + ... + 21626006.

Almost surely, 2^20349629376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20349629376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27154046784).

20349629376 is an abundant number, since it is smaller than the sum of its proper divisors (33958464192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20349629376 is a wasteful number, since it uses less digits than its factorization.

20349629376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 51.

The spelling of 20349629376 in words is "twenty billion, three hundred forty-nine million, six hundred twenty-nine thousand, three hundred seventy-six".