20932773477 has 32 divisors (see below), whose sum is σ = 34808017920. Its totient is φ = 10870830720.

The previous prime is 20932773451. The next prime is 20932773487. The reversal of 20932773477 is 77437723902.

It is a happy number.

It is not a de Polignac number, because 20932773477 - 2⁶ = 20932773413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20932773487) 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 31 ways as a sum of consecutive naturals, for example, 858618 + ... + 882660.

It is an arithmetic number, because the mean of its divisors is an integer number (1087750560).

Almost surely, 2^20932773477 is an apocalyptic number.

It is an amenable number.

20932773477 is a deficient number, since it is larger than the sum of its proper divisors (13875244443).

20932773477 is a wasteful number, since it uses less digits than its factorization.

20932773477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27833.

The product of its (nonzero) digits is 3111696, while the sum is 51.

The spelling of 20932773477 in words is "twenty billion, nine hundred thirty-two million, seven hundred seventy-three thousand, four hundred seventy-seven".