307861682045 has 4 divisors (see below), whose sum is σ = 369434018460. Its totient is φ = 246289345632.

The previous prime is 307861682027. The next prime is 307861682069. The reversal of 307861682045 is 540286168703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540286168703 = 43 ⋅12564794621.

It can be written as a sum of positive squares in 2 ways, for example, as 42639772036 + 265221910009 = 206494^2 + 514997^2 .

It is a cyclic number.

It is not a de Polignac number, because 307861682045 - 2¹⁶ = 307861616509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 307861681984 and 307861682002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30786168200 + ... + 30786168209.

It is an arithmetic number, because the mean of its divisors is an integer number (92358504615).

Almost surely, 2^307861682045 is an apocalyptic number.

It is an amenable number.

307861682045 is a deficient number, since it is larger than the sum of its proper divisors (61572336415).

307861682045 is an equidigital number, since it uses as much as digits as its factorization.

307861682045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61572336414.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 307861682045 in words is "three hundred seven billion, eight hundred sixty-one million, six hundred eighty-two thousand, forty-five".