20435814479 has 8 divisors (see below), whose sum is σ = 21343900032. Its totient is φ = 19529359960.

The previous prime is 20435814449. The next prime is 20435814481. The reversal of 20435814479 is 97441853402.

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 20435814479 - 2²⁰ = 20434765903 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 (20435814409) 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, 382109 + ... + 432294.

It is an arithmetic number, because the mean of its divisors is an integer number (2667987504).

Almost surely, 2^20435814479 is an apocalyptic number.

20435814479 is a deficient number, since it is larger than the sum of its proper divisors (908085553).

20435814479 is a wasteful number, since it uses less digits than its factorization.

20435814479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815517.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 20435814479 in words is "twenty billion, four hundred thirty-five million, eight hundred fourteen thousand, four hundred seventy-nine".