20523020349 has 32 divisors (see below), whose sum is σ = 30310994560. Its totient is φ = 12271730688.

The previous prime is 20523020327. The next prime is 20523020363. The reversal of 20523020349 is 94302032502.

It is not a de Polignac number, because 20523020349 - 2⁵ = 20523020317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523020369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291957 + ... + 355365.

It is an arithmetic number, because the mean of its divisors is an integer number (947218580).

Almost surely, 2^20523020349 is an apocalyptic number.

It is an amenable number.

20523020349 is a deficient number, since it is larger than the sum of its proper divisors (9787974211).

20523020349 is a wasteful number, since it uses less digits than its factorization.

20523020349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63661.

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 20523020349 in words is "twenty billion, five hundred twenty-three million, twenty thousand, three hundred forty-nine".