20263380345 has 24 divisors (see below), whose sum is σ = 37824977736. Its totient is φ = 9975817728.

The previous prime is 20263380341. The next prime is 20263380377. The reversal of 20263380345 is 54308336202.

It is a happy number.

20263380345 is a `hidden beast` number, since 20 + 263 + 38 + 0 + 345 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 439866729 + 19823513616 = 20973^2 + 140796^2 .

It is not a de Polignac number, because 20263380345 - 2² = 20263380341 is a prime.

It is a super-2 number, since 2×20263380345² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20263380341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17318544 + ... + 17319713.

It is an arithmetic number, because the mean of its divisors is an integer number (1576040739).

Almost surely, 2^20263380345 is an apocalyptic number.

It is an amenable number.

20263380345 is a deficient number, since it is larger than the sum of its proper divisors (17561597391).

20263380345 is a wasteful number, since it uses less digits than its factorization.

20263380345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34638281 (or 34638278 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 20263380345 in words is "twenty billion, two hundred sixty-three million, three hundred eighty thousand, three hundred forty-five".