78322036542 has 16 divisors (see below), whose sum is σ = 157253586192. Its totient is φ = 26005760000.

The previous prime is 78322036537. The next prime is 78322036553. The reversal of 78322036542 is 24563022387.

It is a super-2 number, since 2×78322036542² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78322036494 and 78322036503.

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, 25394709 + ... + 25397792.

It is an arithmetic number, because the mean of its divisors is an integer number (9828349137).

Almost surely, 2^78322036542 is an apocalyptic number.

78322036542 is an abundant number, since it is smaller than the sum of its proper divisors (78931549650).

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

78322036542 is a wasteful number, since it uses less digits than its factorization.

78322036542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50792763.

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 78322036542 in words is "seventy-eight billion, three hundred twenty-two million, thirty-six thousand, five hundred forty-two".