20941023477 has 32 divisors (see below), whose sum is σ = 31138873344. Its totient is φ = 12409070400.

The previous prime is 20941023473. The next prime is 20941023479. The reversal of 20941023477 is 77432014902.

It is not a de Polignac number, because 20941023477 - 2² = 20941023473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20941023473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1679727 + ... + 1692147.

It is an arithmetic number, because the mean of its divisors is an integer number (973089792).

Almost surely, 2^20941023477 is an apocalyptic number.

It is an amenable number.

20941023477 is a deficient number, since it is larger than the sum of its proper divisors (10197849867).

20941023477 is a wasteful number, since it uses less digits than its factorization.

20941023477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13569.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 20941023477 in words is "twenty billion, nine hundred forty-one million, twenty-three thousand, four hundred seventy-seven".