612639795786 has 8 divisors (see below), whose sum is σ = 1225279591584. Its totient is φ = 204213265260.

The previous prime is 612639795721. The next prime is 612639795787. The reversal of 612639795786 is 687597936216.

It is a sphenic number, since it is the product of 3 distinct primes.

612639795786 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 612639795786.

It is not an unprimeable number, because it can be changed into a prime (612639795787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51053316310 + ... + 51053316321.

It is an arithmetic number, because the mean of its divisors is an integer number (153159948948).

Almost surely, 2^612639795786 is an apocalyptic number.

612639795786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612639795786 is a wasteful number, since it uses less digits than its factorization.

612639795786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102106632636.

The product of its digits is 205752960, while the sum is 69.

The spelling of 612639795786 in words is "six hundred twelve billion, six hundred thirty-nine million, seven hundred ninety-five thousand, seven hundred eighty-six".