20335908477 has 16 divisors (see below), whose sum is σ = 27740867840. Its totient is φ = 13247649792.

The previous prime is 20335908451. The next prime is 20335908479. The reversal of 20335908477 is 77480953302.

It is not a de Polignac number, because 20335908477 - 2¹¹ = 20335906429 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 (20335908479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419308 + ... + 465285.

It is an arithmetic number, because the mean of its divisors is an integer number (1733804240).

Almost surely, 2^20335908477 is an apocalyptic number.

It is an amenable number.

20335908477 is a deficient number, since it is larger than the sum of its proper divisors (7404959363).

20335908477 is an equidigital number, since it uses as much as digits as its factorization.

20335908477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884772.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 20335908477 in words is "twenty billion, three hundred thirty-five million, nine hundred eight thousand, four hundred seventy-seven".