20342733477 has 64 divisors (see below), whose sum is σ = 33124515840. Its totient is φ = 10944460800.

The previous prime is 20342733473. The next prime is 20342733491. The reversal of 20342733477 is 77433724302.

It is not a de Polignac number, because 20342733477 - 2² = 20342733473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342733473) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2479452 + ... + 2487642.

It is an arithmetic number, because the mean of its divisors is an integer number (517570560).

Almost surely, 2^20342733477 is an apocalyptic number.

It is an amenable number.

20342733477 is a deficient number, since it is larger than the sum of its proper divisors (12781782363).

20342733477 is a wasteful number, since it uses less digits than its factorization.

20342733477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8474.

The product of its (nonzero) digits is 592704, while the sum is 42.

The spelling of 20342733477 in words is "twenty billion, three hundred forty-two million, seven hundred thirty-three thousand, four hundred seventy-seven".