991725783362 has 64 divisors (see below), whose sum is σ = 1661799379968. Its totient is φ = 441776640000.

The previous prime is 991725783329. The next prime is 991725783371. The reversal of 991725783362 is 263387527199.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 991725783295 and 991725783304.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8779562 + ... + 8891802.

It is an arithmetic number, because the mean of its divisors is an integer number (25965615312).

Almost surely, 2^991725783362 is an apocalyptic number.

991725783362 is a deficient number, since it is larger than the sum of its proper divisors (670073596606).

991725783362 is a wasteful number, since it uses less digits than its factorization.

991725783362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112475.

The product of its digits is 34292160, while the sum is 62.

The spelling of 991725783362 in words is "nine hundred ninety-one billion, seven hundred twenty-five million, seven hundred eighty-three thousand, three hundred sixty-two".