78332585801 has 12 divisors (see below), whose sum is σ = 80849287680. Its totient is φ = 75881554320.

The previous prime is 78332585789. The next prime is 78332585803. The reversal of 78332585801 is 10858523387.

It is a de Polignac number, because none of the positive numbers 2^k-78332585801 is a prime.

It is a super-2 number, since 2×78332585801² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78332585801.

It is not an unprimeable number, because it can be changed into a prime (78332585803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45416 + ... + 398406.

It is an arithmetic number, because the mean of its divisors is an integer number (6737440640).

Almost surely, 2^78332585801 is an apocalyptic number.

It is an amenable number.

78332585801 is a deficient number, since it is larger than the sum of its proper divisors (2516701879).

78332585801 is an equidigital number, since it uses as much as digits as its factorization.

78332585801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353176 (or 353123 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 78332585801 in words is "seventy-eight billion, three hundred thirty-two million, five hundred eighty-five thousand, eight hundred one".