74788994580647 has 16 divisors (see below), whose sum is σ = 79578456946560. Its totient is φ = 70043259482112.

The previous prime is 74788994580617. The next prime is 74788994580739. The reversal of 74788994580647 is 74608549988747.

It is a cyclic number.

It is not a de Polignac number, because 74788994580647 - 2¹⁰ = 74788994579623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74788994580617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306479 + ... + 12234047.

It is an arithmetic number, because the mean of its divisors is an integer number (4973653559160).

Almost surely, 2^{74788994580647} is an apocalyptic number.

74788994580647 is a deficient number, since it is larger than the sum of its proper divisors (4789462365913).

74788994580647 is a wasteful number, since it uses less digits than its factorization.

74788994580647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929402.

The product of its (nonzero) digits is 27311800320, while the sum is 86.

The spelling of 74788994580647 in words is "seventy-four trillion, seven hundred eighty-eight billion, nine hundred ninety-four million, five hundred eighty thousand, six hundred forty-seven".