78602622840 has 288 divisors, whose sum is σ = 299000080080. Its totient is φ = 17855437824.

The previous prime is 78602622817. The next prime is 78602622841. The reversal of 78602622840 is 4822620687.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78602622841) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2861652 + ... + 2888988.

Almost surely, 2^78602622840 is an apocalyptic number.

78602622840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78602622840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149500040040).

78602622840 is an abundant number, since it is smaller than the sum of its proper divisors (220397457240).

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

78602622840 is a wasteful number, since it uses less digits than its factorization.

78602622840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27531 (or 27517 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 78602622840 in words is "seventy-eight billion, six hundred two million, six hundred twenty-two thousand, eight hundred forty".