20617061361 has 16 divisors (see below), whose sum is σ = 29667403584. Its totient is φ = 12660243264.

The previous prime is 20617061351. The next prime is 20617061371. The reversal of 20617061361 is 16316071602.

It is an interprime number because it is at equal distance from previous prime (20617061351) and next prime (20617061371).

It is not a de Polignac number, because 20617061361 - 2¹³ = 20617053169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20617061351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547786 + ... + 584211.

It is an arithmetic number, because the mean of its divisors is an integer number (1854212724).

Almost surely, 2^20617061361 is an apocalyptic number.

It is an amenable number.

20617061361 is a deficient number, since it is larger than the sum of its proper divisors (9050342223).

20617061361 is a wasteful number, since it uses less digits than its factorization.

20617061361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132480.

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 20617061361 in words is "twenty billion, six hundred seventeen million, sixty-one thousand, three hundred sixty-one".