7871561481746 has 16 divisors (see below), whose sum is σ = 12528662436576. Its totient is φ = 3696332175936.

The previous prime is 7871561481743. The next prime is 7871561481761. The reversal of 7871561481746 is 6471841651787.

It is a super-2 number, since 2×7871561481746² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7871561481743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247860476 + ... + 247892231.

It is an arithmetic number, because the mean of its divisors is an integer number (783041402286).

Almost surely, 2^{7871561481746} is an apocalyptic number.

7871561481746 is a deficient number, since it is larger than the sum of its proper divisors (4657100954830).

7871561481746 is a wasteful number, since it uses less digits than its factorization.

7871561481746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495753193.

The product of its digits is 63221760, while the sum is 65.

The spelling of 7871561481746 in words is "seven trillion, eight hundred seventy-one billion, five hundred sixty-one million, four hundred eighty-one thousand, seven hundred forty-six".