7147191690642 has 64 divisors (see below), whose sum is σ = 15935036705280. Its totient is φ = 2123813903616.

The previous prime is 7147191690619. The next prime is 7147191690647. The reversal of 7147191690642 is 2460961917417.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (7147191690647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9295053 + ... + 10034559.

It is an arithmetic number, because the mean of its divisors is an integer number (248984948520).

Almost surely, 2^{7147191690642} is an apocalyptic number.

7147191690642 is an abundant number, since it is smaller than the sum of its proper divisors (8787845014638).

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

7147191690642 is a wasteful number, since it uses less digits than its factorization.

7147191690642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744535.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 7147191690642 in words is "seven trillion, one hundred forty-seven billion, one hundred ninety-one million, six hundred ninety thousand, six hundred forty-two".