68675780537 has 16 divisors (see below), whose sum is σ = 84549696000. Its totient is φ = 54320386752.

The previous prime is 68675780501. The next prime is 68675780543. The reversal of 68675780537 is 73508757686.

It is a cyclic number.

It is not a de Polignac number, because 68675780537 - 2¹⁶ = 68675715001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68675780537.

It is not an unprimeable number, because it can be changed into a prime (68675780557) 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, 191339 + ... + 417087.

It is an arithmetic number, because the mean of its divisors is an integer number (5284356000).

Almost surely, 2^68675780537 is an apocalyptic number.

It is an amenable number.

68675780537 is a deficient number, since it is larger than the sum of its proper divisors (15873915463).

68675780537 is a wasteful number, since it uses less digits than its factorization.

68675780537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229112.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 68675780537 in words is "sixty-eight billion, six hundred seventy-five million, seven hundred eighty thousand, five hundred thirty-seven".