7785419420 has 12 divisors (see below), whose sum is σ = 16349380824. Its totient is φ = 3114167760.

The previous prime is 7785419407. The next prime is 7785419443. The reversal of 7785419420 is 249145877.

It is a super-2 number, since 2×7785419420² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194635466 + ... + 194635505.

It is an arithmetic number, because the mean of its divisors is an integer number (1362448402).

Almost surely, 2^7785419420 is an apocalyptic number.

It is an amenable number.

7785419420 is an abundant number, since it is smaller than the sum of its proper divisors (8563961404).

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

7785419420 is a wasteful number, since it uses less digits than its factorization.

7785419420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389270980 (or 389270978 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 7785419420 is about 88235.0237717427. The cubic root of 7785419420 is about 1981.9559812682.

The spelling of 7785419420 in words is "seven billion, seven hundred eighty-five million, four hundred nineteen thousand, four hundred twenty".