20293376545 has 16 divisors (see below), whose sum is σ = 27129609360. Its totient is φ = 14469122304.

The previous prime is 20293376513. The next prime is 20293376549. The reversal of 20293376545 is 54567339202.

It can be written as a sum of positive squares in 8 ways, for example, as 2480737249 + 17812639296 = 49807^2 + 133464^2 .

It is not a de Polignac number, because 20293376545 - 2⁵ = 20293376513 is a prime.

It is a super-2 number, since 2×20293376545² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20293376495 and 20293376504.

It is not an unprimeable number, because it can be changed into a prime (20293376549) 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, 5380974 + ... + 5384743.

It is an arithmetic number, because the mean of its divisors is an integer number (1695600585).

Almost surely, 2^20293376545 is an apocalyptic number.

It is an amenable number.

20293376545 is a deficient number, since it is larger than the sum of its proper divisors (6836232815).

20293376545 is a wasteful number, since it uses less digits than its factorization.

20293376545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10765764.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 20293376545 in words is "twenty billion, two hundred ninety-three million, three hundred seventy-six thousand, five hundred forty-five".