67812520245 has 16 divisors (see below), whose sum is σ = 108513513600. Its totient is φ = 36162183744.

The previous prime is 67812520241. The next prime is 67812520261. The reversal of 67812520245 is 54202521876.

It is not a de Polignac number, because 67812520245 - 2² = 67812520241 is a prime.

It is a super-3 number, since 3×67812520245³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67812520197 and 67812520206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67812520241) 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, 154270 + ... + 399279.

It is an arithmetic number, because the mean of its divisors is an integer number (6782094600).

Almost surely, 2^67812520245 is an apocalyptic number.

It is an amenable number.

67812520245 is a deficient number, since it is larger than the sum of its proper divisors (40700993355).

67812520245 is a wasteful number, since it uses less digits than its factorization.

67812520245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561724.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 67812520245 in words is "sixty-seven billion, eight hundred twelve million, five hundred twenty thousand, two hundred forty-five".