20614447477 has 8 divisors (see below), whose sum is σ = 22221311840. Its totient is φ = 19010602800.

The previous prime is 20614447459. The next prime is 20614447517. The reversal of 20614447477 is 77474441602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20614447477 - 2⁷ = 20614447349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20614447457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740727 + ... + 768052.

It is an arithmetic number, because the mean of its divisors is an integer number (2777663980).

Almost surely, 2^20614447477 is an apocalyptic number.

It is an amenable number.

20614447477 is a deficient number, since it is larger than the sum of its proper divisors (1606864363).

20614447477 is a wasteful number, since it uses less digits than its factorization.

20614447477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509843.

The product of its (nonzero) digits is 1053696, while the sum is 46.

The spelling of 20614447477 in words is "twenty billion, six hundred fourteen million, four hundred forty-seven thousand, four hundred seventy-seven".