Search a number
-
+
57834782551 = 7131043360917
BaseRepresentation
bin110101110111001110…
…001011111101010111
312112021121100100210101
4311313032023331113
51421421201020201
642322520034531
74115125353250
oct656716137527
9175247310711
1057834782551
1122589255157
12b260902a47
1355b8cb6630
142b290abb27
151787606d01
hexd7738bf57

57834782551 has 16 divisors (see below), whose sum is σ = 71189262144. Its totient is φ = 45754251264.

The previous prime is 57834782543. The next prime is 57834782597. The reversal of 57834782551 is 15528743875.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 57834782551 - 23 = 57834782543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57834782492 and 57834782501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57834782531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 918945 + ... + 979861.

It is an arithmetic number, because the mean of its divisors is an integer number (4449328884).

Almost surely, 257834782551 is an apocalyptic number.

57834782551 is a deficient number, since it is larger than the sum of its proper divisors (13354479593).

57834782551 is a wasteful number, since it uses less digits than its factorization.

57834782551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71370.

The product of its digits is 9408000, while the sum is 55.

The spelling of 57834782551 in words is "fifty-seven billion, eight hundred thirty-four million, seven hundred eighty-two thousand, five hundred fifty-one".

Divisors: 1 7 13 91 10433 60917 73031 135629 426419 791921 949403 5543447 635547061 4448829427 8262111793 57834782551