77455697993 has 8 divisors (see below), whose sum is σ = 84657461760. Its totient is φ = 70547883840.

The previous prime is 77455697971. The next prime is 77455698011. The reversal of 77455697993 is 39979655477.

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

It is not a de Polignac number, because 77455697993 - 2³⁰ = 76381956169 is a prime.

It is a super-3 number, since 3×77455697993³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77455697903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73486853 + ... + 73487906.

It is an arithmetic number, because the mean of its divisors is an integer number (10582182720).

Almost surely, 2^77455697993 is an apocalyptic number.

It is an amenable number.

77455697993 is a deficient number, since it is larger than the sum of its proper divisors (7201763767).

77455697993 is a wasteful number, since it uses less digits than its factorization.

77455697993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146974807.

The product of its digits is 450084600, while the sum is 71.

The spelling of 77455697993 in words is "seventy-seven billion, four hundred fifty-five million, six hundred ninety-seven thousand, nine hundred ninety-three".