5078777855405 has 4 divisors (see below), whose sum is σ = 6094533426492. Its totient is φ = 4063022284320.

The previous prime is 5078777855399. The next prime is 5078777855449. The reversal of 5078777855405 is 5045587778705.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2166365972164 + 2912411883241 = 1471858^2 + 1706579^2 .

It is not a de Polignac number, because 5078777855405 - 2¹⁴ = 5078777839021 is a prime.

It is a super-2 number, since 2×5078777855405² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507877785536 + ... + 507877785545.

It is an arithmetic number, because the mean of its divisors is an integer number (1523633356623).

Almost surely, 2^{5078777855405} is an apocalyptic number.

It is an amenable number.

5078777855405 is a deficient number, since it is larger than the sum of its proper divisors (1015755571087).

5078777855405 is a wasteful number, since it uses less digits than its factorization.

5078777855405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015755571086.

The product of its (nonzero) digits is 384160000, while the sum is 68.

The spelling of 5078777855405 in words is "five trillion, seventy-eight billion, seven hundred seventy-seven million, eight hundred fifty-five thousand, four hundred five".