52780277505505 has 32 divisors (see below), whose sum is σ = 73450823587200. Its totient is φ = 36005305536000.

The previous prime is 52780277505491. The next prime is 52780277505551. The reversal of 52780277505505 is 50550577208725.

It is not a de Polignac number, because 52780277505505 - 2⁷ = 52780277505377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52780277505505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249931300 + ... + 250142389.

It is an arithmetic number, because the mean of its divisors is an integer number (2295338237100).

Almost surely, 2^{52780277505505} is an apocalyptic number.

52780277505505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52780277505505 is a deficient number, since it is larger than the sum of its proper divisors (20670546081695).

52780277505505 is a wasteful number, since it uses less digits than its factorization.

52780277505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500073825.

The product of its (nonzero) digits is 34300000, while the sum is 58.

The spelling of 52780277505505 in words is "fifty-two trillion, seven hundred eighty billion, two hundred seventy-seven million, five hundred five thousand, five hundred five".