20402641927 has 4 divisors (see below), whose sum is σ = 20414416680. Its totient is φ = 20390867176.

The previous prime is 20402641913. The next prime is 20402641937. The reversal of 20402641927 is 72914620402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20402641927 - 2⁷ = 20402641799 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 (20402641907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5884777 + ... + 5888242.

It is an arithmetic number, because the mean of its divisors is an integer number (5103604170).

Almost surely, 2^20402641927 is an apocalyptic number.

20402641927 is a deficient number, since it is larger than the sum of its proper divisors (11774753).

20402641927 is a wasteful number, since it uses less digits than its factorization.

20402641927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11774752.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 20402641927 in words is "twenty billion, four hundred two million, six hundred forty-one thousand, nine hundred twenty-seven".