78019620344 has 32 divisors (see below), whose sum is σ = 160233001200. Its totient is φ = 35449075200.

The previous prime is 78019620331. The next prime is 78019620347. The reversal of 78019620344 is 44302691087.

It is a super-2 number, since 2×78019620344² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78019620295 and 78019620304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78019620347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9886982 + ... + 9894869.

Almost surely, 2^78019620344 is an apocalyptic number.

It is an amenable number.

78019620344 is an abundant number, since it is smaller than the sum of its proper divisors (82213380856).

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

78019620344 is a wasteful number, since it uses less digits than its factorization.

78019620344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19781903 (or 19781899 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 78019620344 in words is "seventy-eight billion, nineteen million, six hundred twenty thousand, three hundred forty-four".