7678158281552 has 20 divisors (see below), whose sum is σ = 16228834550016. Its totient is φ = 3490071946080.

The previous prime is 7678158281539. The next prime is 7678158281561. The reversal of 7678158281552 is 2551828518767.

It is a super-2 number, since 2×7678158281552² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21812949488 + ... + 21812949839.

Almost surely, 2^{7678158281552} is an apocalyptic number.

It is an amenable number.

7678158281552 is an abundant number, since it is smaller than the sum of its proper divisors (8550676268464).

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

7678158281552 is a wasteful number, since it uses less digits than its factorization.

7678158281552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43625899346 (or 43625899340 counting only the distinct ones).

The product of its digits is 75264000, while the sum is 65.

The spelling of 7678158281552 in words is "seven trillion, six hundred seventy-eight billion, one hundred fifty-eight million, two hundred eighty-one thousand, five hundred fifty-two".