7478405853381 has 12 divisors (see below), whose sum is σ = 10845178212960. Its totient is φ = 4965740937000.

The previous prime is 7478405853353. The next prime is 7478405853383. The reversal of 7478405853381 is 1833585048747.

It is a happy number.

7478405853381 is a `hidden beast` number, since 7 + 4 + 7 + 8 + 40 + 58 + 533 + 8 + 1 = 666.

It is not a de Polignac number, because 7478405853381 - 2²² = 7478401659077 is a prime.

It is a super-2 number, since 2×7478405853381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7478405853383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655244721 + ... + 1655249238.

It is an arithmetic number, because the mean of its divisors is an integer number (903764851080).

Almost surely, 2^{7478405853381} is an apocalyptic number.

It is an amenable number.

7478405853381 is a deficient number, since it is larger than the sum of its proper divisors (3366772359579).

7478405853381 is a wasteful number, since it uses less digits than its factorization.

7478405853381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310494216 (or 3310494213 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 63.

The spelling of 7478405853381 in words is "seven trillion, four hundred seventy-eight billion, four hundred five million, eight hundred fifty-three thousand, three hundred eighty-one".