78552581663582 has 8 divisors (see below), whose sum is σ = 126892631918136. Its totient is φ = 36255037690872.

The previous prime is 78552581663561. The next prime is 78552581663587. The reversal of 78552581663582 is 28536618525587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78552581663587) 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, 1510626570428 + ... + 1510626570479.

It is an arithmetic number, because the mean of its divisors is an integer number (15861578989767).

Almost surely, 2^{78552581663582} is an apocalyptic number.

78552581663582 is a deficient number, since it is larger than the sum of its proper divisors (48340050254554).

78552581663582 is a wasteful number, since it uses less digits than its factorization.

78552581663582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021253140922.

The product of its digits is 967680000, while the sum is 71.

The spelling of 78552581663582 in words is "seventy-eight trillion, five hundred fifty-two billion, five hundred eighty-one million, six hundred sixty-three thousand, five hundred eighty-two".