78222702538588 has 12 divisors (see below), whose sum is σ = 138932859733192. Its totient is φ = 38527599757680.

The previous prime is 78222702538583. The next prime is 78222702538639. The reversal of 78222702538588 is 88583520722287.

It is a super-2 number, since 2×78222702538588² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78222702538583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145937877603 + ... + 145937878138.

Almost surely, 2^{78222702538588} is an apocalyptic number.

It is an amenable number.

78222702538588 is a deficient number, since it is larger than the sum of its proper divisors (60710157194604).

78222702538588 is a wasteful number, since it uses less digits than its factorization.

78222702538588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291875755812 (or 291875755810 counting only the distinct ones).

The product of its (nonzero) digits is 240844800, while the sum is 67.

The spelling of 78222702538588 in words is "seventy-eight trillion, two hundred twenty-two billion, seven hundred two million, five hundred thirty-eight thousand, five hundred eighty-eight".