78102783606 has 16 divisors (see below), whose sum is σ = 156208333824. Its totient is φ = 26033800104.

The previous prime is 78102783547. The next prime is 78102783653. The reversal of 78102783606 is 60638720187.

78102783606 is a nontrivial binomial coefficient, being equal to C(395229, 2).

It is a super-2 number, since 2×78102783606² (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 7 ways as a sum of consecutive naturals, for example, 526971 + ... + 658713.

It is an arithmetic number, because the mean of its divisors is an integer number (9763020864).

Almost surely, 2^78102783606 is an apocalyptic number.

78102783606 is the 395228-th triangular number.

78102783606 is an abundant number, since it is smaller than the sum of its proper divisors (78105550218).

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

78102783606 is a wasteful number, since it uses less digits than its factorization.

78102783606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230555.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 78102783606 in words is "seventy-eight billion, one hundred two million, seven hundred eighty-three thousand, six hundred six".