20434577446 has 8 divisors (see below), whose sum is σ = 30728305944. Its totient is φ = 10191808800.

The previous prime is 20434577399. The next prime is 20434577467. The reversal of 20434577446 is 64477543402.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20434577396 and 20434577405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12738960 + ... + 12740563.

It is an arithmetic number, because the mean of its divisors is an integer number (3841038243).

Almost surely, 2^20434577446 is an apocalyptic number.

20434577446 is a deficient number, since it is larger than the sum of its proper divisors (10293728498).

20434577446 is a wasteful number, since it uses less digits than its factorization.

20434577446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25479926.

The product of its (nonzero) digits is 2257920, while the sum is 46.

The spelling of 20434577446 in words is "twenty billion, four hundred thirty-four million, five hundred seventy-seven thousand, four hundred forty-six".