20291926770 has 48 divisors (see below), whose sum is σ = 52766040600. Its totient is φ = 5410459392.

The previous prime is 20291926703. The next prime is 20291926813. The reversal of 20291926770 is 7762919202.

20291926770 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20279753649 + 12173121 = 142407^2 + 3489^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1301662 + ... + 1317158.

Almost surely, 2^20291926770 is an apocalyptic number.

20291926770 is an abundant number, since it is smaller than the sum of its proper divisors (32474113830).

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

20291926770 is a wasteful number, since it uses less digits than its factorization.

20291926770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30059 (or 30056 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 20291926770 in words is "twenty billion, two hundred ninety-one million, nine hundred twenty-six thousand, seven hundred seventy".