20551270607 has 16 divisors (see below), whose sum is σ = 24954857280. Its totient is φ = 16579148544.

The previous prime is 20551270549. The next prime is 20551270613. The reversal of 20551270607 is 70607215502.

It is a happy number.

It is not a de Polignac number, because 20551270607 - 2⁸ = 20551270351 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 (20551273607) 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 15 ways as a sum of consecutive naturals, for example, 264398 + ... + 333179.

It is an arithmetic number, because the mean of its divisors is an integer number (1559678580).

Almost surely, 2^20551270607 is an apocalyptic number.

20551270607 is a deficient number, since it is larger than the sum of its proper divisors (4403586673).

20551270607 is an frugal number, since it uses more digits than its factorization.

20551270607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597635 (or 597601 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 20551270607 in words is "twenty billion, five hundred fifty-one million, two hundred seventy thousand, six hundred seven".