77800550753 has 8 divisors (see below), whose sum is σ = 77970837672. Its totient is φ = 77630374656.

The previous prime is 77800550741. The next prime is 77800550761. The reversal of 77800550753 is 35705500877.

It can be written as a sum of positive squares in 4 ways, for example, as 21335860624 + 56464690129 = 146068^2 + 237623^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 77800550753 - 2²⁰ = 77799502177 is a prime.

It is a super-3 number, since 3×77800550753³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77800550698 and 77800550707.

It is not an unprimeable number, because it can be changed into a prime (77850550753) 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, 1465001 + ... + 1517177.

It is an arithmetic number, because the mean of its divisors is an integer number (9746354709).

Almost surely, 2^77800550753 is an apocalyptic number.

It is an amenable number.

77800550753 is a deficient number, since it is larger than the sum of its proper divisors (170286919).

77800550753 is a wasteful number, since it uses less digits than its factorization.

77800550753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55411.

The product of its (nonzero) digits is 1029000, while the sum is 47.

The spelling of 77800550753 in words is "seventy-seven billion, eight hundred million, five hundred fifty thousand, seven hundred fifty-three".