20612064431 has 8 divisors (see below), whose sum is σ = 23879339424. Its totient is φ = 17425463040.

The previous prime is 20612064427. The next prime is 20612064449. The reversal of 20612064431 is 13446021602.

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 20612064431 - 2² = 20612064427 is a prime.

It is a super-2 number, since 2×20612064431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20612064394 and 20612064403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612064401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20167850 + ... + 20168871.

It is an arithmetic number, because the mean of its divisors is an integer number (2984917428).

Almost surely, 2^20612064431 is an apocalyptic number.

20612064431 is a deficient number, since it is larger than the sum of its proper divisors (3267274993).

20612064431 is an equidigital number, since it uses as much as digits as its factorization.

20612064431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40336801.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 20612064431 in words is "twenty billion, six hundred twelve million, sixty-four thousand, four hundred thirty-one".