20353982365 has 16 divisors (see below), whose sum is σ = 25497129600. Its totient is φ = 15568863552.

The previous prime is 20353982357. The next prime is 20353982393. The reversal of 20353982365 is 56328935302.

It is a cyclic number.

It is not a de Polignac number, because 20353982365 - 2³ = 20353982357 is a prime.

It is a super-2 number, since 2×20353982365² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257131 + ... + 326839.

It is an arithmetic number, because the mean of its divisors is an integer number (1593570600).

Almost surely, 2^20353982365 is an apocalyptic number.

It is an amenable number.

20353982365 is a deficient number, since it is larger than the sum of its proper divisors (5143147235).

20353982365 is a wasteful number, since it uses less digits than its factorization.

20353982365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72276.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 20353982365 in words is "twenty billion, three hundred fifty-three million, nine hundred eighty-two thousand, three hundred sixty-five".