78028251942 has 16 divisors (see below), whose sum is σ = 156134129472. Its totient is φ = 25996479720.

The previous prime is 78028251929. The next prime is 78028251949. The reversal of 78028251942 is 24915282087.

It is a super-2 number, since 2×78028251942² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78028251891 and 78028251900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78028251949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3221328 + ... + 3245459.

It is an arithmetic number, because the mean of its divisors is an integer number (9758383092).

Almost surely, 2^78028251942 is an apocalyptic number.

78028251942 is an abundant number, since it is smaller than the sum of its proper divisors (78105877530).

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

78028251942 is a wasteful number, since it uses less digits than its factorization.

78028251942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468803.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 78028251942 in words is "seventy-eight billion, twenty-eight million, two hundred fifty-one thousand, nine hundred forty-two".