51651153618 has 32 divisors (see below), whose sum is σ = 109522808640. Its totient is φ = 16182965760.

The previous prime is 51651153599. The next prime is 51651153623. The reversal of 51651153618 is 81635115615.

It is a self number, because there is not a number n which added to its sum of digits gives 51651153618.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255088 + ... + 410331.

It is an arithmetic number, because the mean of its divisors is an integer number (3422587770).

Almost surely, 2^51651153618 is an apocalyptic number.

51651153618 is an abundant number, since it is smaller than the sum of its proper divisors (57871655022).

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

51651153618 is a wasteful number, since it uses less digits than its factorization.

51651153618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666202.

The product of its digits is 108000, while the sum is 42.

The spelling of 51651153618 in words is "fifty-one billion, six hundred fifty-one million, one hundred fifty-three thousand, six hundred eighteen".