7888160421 has 12 divisors (see below), whose sum is σ = 11554489440. Its totient is φ = 5184705960.

The previous prime is 7888160417. The next prime is 7888160443. The reversal of 7888160421 is 1240618887.

It is not a de Polignac number, because 7888160421 - 2² = 7888160417 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7888170421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6171631 + ... + 6172908.

It is an arithmetic number, because the mean of its divisors is an integer number (962874120).

Almost surely, 2^7888160421 is an apocalyptic number.

7888160421 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7888160421 is a deficient number, since it is larger than the sum of its proper divisors (3666329019).

7888160421 is a wasteful number, since it uses less digits than its factorization.

7888160421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12344616 (or 12344613 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 7888160421 is about 88815.3163649153. The cubic root of 7888160421 is about 1990.6362637221.

The spelling of 7888160421 in words is "seven billion, eight hundred eighty-eight million, one hundred sixty thousand, four hundred twenty-one".