7478682145761 has 4 divisors (see below), whose sum is σ = 9971576194352. Its totient is φ = 4985788097172.

The previous prime is 7478682145747. The next prime is 7478682145777. The reversal of 7478682145761 is 1675412868747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7478682145761 - 2⁷ = 7478682145633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7478682145692 and 7478682145701.

It is not an unprimeable number, because it can be changed into a prime (7478682141761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246447024291 + ... + 1246447024296.

It is an arithmetic number, because the mean of its divisors is an integer number (2492894048588).

Almost surely, 2^{7478682145761} is an apocalyptic number.

It is an amenable number.

7478682145761 is a deficient number, since it is larger than the sum of its proper divisors (2492894048591).

7478682145761 is a wasteful number, since it uses less digits than its factorization.

7478682145761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492894048590.

The product of its digits is 126443520, while the sum is 66.

The spelling of 7478682145761 in words is "seven trillion, four hundred seventy-eight billion, six hundred eighty-two million, one hundred forty-five thousand, seven hundred sixty-one".