7919091271788 has 48 divisors (see below), whose sum is σ = 18677634290784. Its totient is φ = 2611187712000.

The previous prime is 7919091271787. The next prime is 7919091271799. The reversal of 7919091271788 is 8871721909197.

It is not an unprimeable number, because it can be changed into a prime (7919091271787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661288 + ... + 4034288.

It is an arithmetic number, because the mean of its divisors is an integer number (389117381058).

Almost surely, 2^{7919091271788} is an apocalyptic number.

It is an amenable number.

7919091271788 is an abundant number, since it is smaller than the sum of its proper divisors (10758543018996).

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

7919091271788 is a wasteful number, since it uses less digits than its factorization.

7919091271788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375122 (or 3375120 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 69.

The spelling of 7919091271788 in words is "seven trillion, nine hundred nineteen billion, ninety-one million, two hundred seventy-one thousand, seven hundred eighty-eight".