78051258444 has 24 divisors (see below), whose sum is σ = 182124329968. Its totient is φ = 26016410880.

The previous prime is 78051258443. The next prime is 78051258457. The reversal of 78051258444 is 44485215087.

It is a happy number.

It is a super-2 number, since 2×78051258444² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78051258393 and 78051258402.

It is not an unprimeable number, because it can be changed into a prime (78051258443) 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, 659304 + ... + 768624.

Almost surely, 2^78051258444 is an apocalyptic number.

It is an amenable number.

78051258444 is an abundant number, since it is smaller than the sum of its proper divisors (104073071524).

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

78051258444 is a wasteful number, since it uses less digits than its factorization.

78051258444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168825 (or 168823 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 48.

The spelling of 78051258444 in words is "seventy-eight billion, fifty-one million, two hundred fifty-eight thousand, four hundred forty-four".