Search a number
-
+
145715686837 = 7311847363563
BaseRepresentation
bin1000011110110101010…
…1001110110110110101
3111221010011202212002021
42013231111032312311
54341411203434322
6150535120513141
713345653621220
oct2075525166665
9457104685067
10145715686837
1156885785276
12242a7a7b7b1
1310982a93106
1470a478c5b7
153bcc8e84c7
hex21ed54edb5

145715686837 has 16 divisors (see below), whose sum is σ = 171997765632. Its totient is φ = 120804381360.

The previous prime is 145715686819. The next prime is 145715686849. The reversal of 145715686837 is 738686517541.

It is a cyclic number.

It is not a de Polignac number, because 145715686837 - 235 = 111355948469 is a prime.

It is a super-2 number, since 2×1457156868372 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145715686037) 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, 219018 + ... + 582580.

It is an arithmetic number, because the mean of its divisors is an integer number (10749860352).

Almost surely, 2145715686837 is an apocalyptic number.

It is an amenable number.

145715686837 is a deficient number, since it is larger than the sum of its proper divisors (26282078795).

145715686837 is a wasteful number, since it uses less digits than its factorization.

145715686837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365448.

The product of its digits is 33868800, while the sum is 61.

The spelling of 145715686837 in words is "one hundred forty-five billion, seven hundred fifteen million, six hundred eighty-six thousand, eight hundred thirty-seven".

Divisors: 1 7 31 217 1847 12929 57257 363563 400799 2544941 11270453 78893171 671500861 4700506027 20816526691 145715686837