73678858561 has 32 divisors (see below), whose sum is σ = 94827921408. Its totient is φ = 55580394240.

The previous prime is 73678858529. The next prime is 73678858573. The reversal of 73678858561 is 16585887637.

It is not a de Polignac number, because 73678858561 - 2⁵ = 73678858529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73678858493 and 73678858502.

It is not an unprimeable number, because it can be changed into a prime (73678853561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275680 + ... + 472606.

It is an arithmetic number, because the mean of its divisors is an integer number (2963372544).

Almost surely, 2^73678858561 is an apocalyptic number.

It is an amenable number.

73678858561 is a deficient number, since it is larger than the sum of its proper divisors (21149062847).

73678858561 is a wasteful number, since it uses less digits than its factorization.

73678858561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197101.

The product of its digits is 67737600, while the sum is 64.

It can be divided in two parts, 73678 and 858561, that added together give a palindrome (932239).

The spelling of 73678858561 in words is "seventy-three billion, six hundred seventy-eight million, eight hundred fifty-eight thousand, five hundred sixty-one".