78285613406 has 64 divisors (see below), whose sum is σ = 164521276416. Its totient is φ = 26930534400.

The previous prime is 78285613387. The next prime is 78285613447. The reversal of 78285613406 is 60431658287.

It is a super-2 number, since 2×78285613406² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 804035 + ... + 896126.

It is an arithmetic number, because the mean of its divisors is an integer number (2570644944).

Almost surely, 2^78285613406 is an apocalyptic number.

78285613406 is an abundant number, since it is smaller than the sum of its proper divisors (86235663010).

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

78285613406 is a wasteful number, since it uses less digits than its factorization.

78285613406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700217.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 78285613406 in words is "seventy-eight billion, two hundred eighty-five million, six hundred thirteen thousand, four hundred six".