20634226465 has 8 divisors (see below), whose sum is σ = 25287903360. Its totient is φ = 16156160112.

The previous prime is 20634226451. The next prime is 20634226469. The reversal of 20634226465 is 56462243602.

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 20634226465 - 2⁷ = 20634226337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20634226469) 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, 43902375 + ... + 43902844.

It is an arithmetic number, because the mean of its divisors is an integer number (3160987920).

Almost surely, 2^20634226465 is an apocalyptic number.

It is an amenable number.

20634226465 is a deficient number, since it is larger than the sum of its proper divisors (4653676895).

20634226465 is an equidigital number, since it uses as much as digits as its factorization.

20634226465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87805271.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 20634226465 in words is "twenty billion, six hundred thirty-four million, two hundred twenty-six thousand, four hundred sixty-five".