20770129744 has 60 divisors (see below), whose sum is σ = 49800952416. Its totient is φ = 8216747136.

The previous prime is 20770129733. The next prime is 20770129747. The reversal of 20770129744 is 44792107702.

It is a self number, because there is not a number n which added to its sum of digits gives 20770129744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770129747) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 529734 + ... + 567589.

Almost surely, 2^20770129744 is an apocalyptic number.

It is an amenable number.

20770129744 is an abundant number, since it is smaller than the sum of its proper divisors (29030822672).

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

20770129744 is a wasteful number, since it uses less digits than its factorization.

20770129744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097364 (or 1097345 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 20770129744 in words is "twenty billion, seven hundred seventy million, one hundred twenty-nine thousand, seven hundred forty-four".