57777400505 has 16 divisors (see below), whose sum is σ = 77680085184. Its totient is φ = 40884252480.

The previous prime is 57777400451. The next prime is 57777400517. The reversal of 57777400505 is 50500477775.

It is a de Polignac number, because none of the positive numbers 2^k-57777400505 is a prime.

It is a super-3 number, since 3×57777400505³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57777400505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14193887 + ... + 14197956.

It is an arithmetic number, because the mean of its divisors is an integer number (4855005324).

Almost surely, 2^57777400505 is an apocalyptic number.

57777400505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57777400505 is a deficient number, since it is larger than the sum of its proper divisors (19902684679).

57777400505 is a wasteful number, since it uses less digits than its factorization.

57777400505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28391896.

The product of its (nonzero) digits is 1200500, while the sum is 47.

The spelling of 57777400505 in words is "fifty-seven billion, seven hundred seventy-seven million, four hundred thousand, five hundred five".