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508130031805 = 51124697374083
BaseRepresentation
bin1110110010011101110…
…10001111100010111101
31210120120110022010020121
413121032322033202331
531311122242004210
61025233130014541
751465636002104
oct7311672174275
91716513263217
10508130031805
11186551179750
128258b877451
1338bbb5bac96
141a844c9903b
15d33e7666da
hex764ee8f8bd

508130031805 has 16 divisors (see below), whose sum is σ = 665217117504. Its totient is φ = 369533162880.

The previous prime is 508130031797. The next prime is 508130031883.

508130031805 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 508130031805 - 23 = 508130031797 is a prime.

It is a super-2 number, since 2×5081300318052 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 1171294 + ... + 1545376.

It is an arithmetic number, because the mean of its divisors is an integer number (41576069844).

Almost surely, 2508130031805 is an apocalyptic number.

508130031805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

508130031805 is a deficient number, since it is larger than the sum of its proper divisors (157087085699).

508130031805 is a wasteful number, since it uses less digits than its factorization.

508130031805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398796.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 508130031805 in words is "five hundred eight billion, one hundred thirty million, thirty-one thousand, eight hundred five".

Divisors: 1 5 11 55 24697 123485 271667 374083 1358335 1870415 4114913 20574565 9238727851 46193639255 101626006361 508130031805