20734629760 has 64 divisors (see below), whose sum is σ = 53381724480. Its totient is φ = 7655860224.

The previous prime is 20734629739. The next prime is 20734629767. The reversal of 20734629760 is 6792643702.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 20734629760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20734629767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1237752 + ... + 1254391.

It is an arithmetic number, because the mean of its divisors is an integer number (834089445).

Almost surely, 2^20734629760 is an apocalyptic number.

20734629760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20734629760 is an abundant number, since it is smaller than the sum of its proper divisors (32647094720).

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

20734629760 is a wasteful number, since it uses less digits than its factorization.

20734629760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492175 (or 2492163 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 20734629760 in words is "twenty billion, seven hundred thirty-four million, six hundred twenty-nine thousand, seven hundred sixty".