Search a number
-
+
78907088143 = 132728364109
BaseRepresentation
bin100100101111100111…
…0101001110100001111
321112200011121101210001
41021133032221310033
52243100203310033
6100125512425131
75462251116442
oct1113716516417
9245604541701
1078907088143
1130511aa3244
12133619a81a7
137596896500
143b67963659
1520bc587e7d
hex125f3a9d0f

78907088143 has 12 divisors (see below), whose sum is σ = 85456834920. Its totient is φ = 72826175136.

The previous prime is 78907088137. The next prime is 78907088153. The reversal of 78907088143 is 34188070987.

It is a happy number.

It is not a de Polignac number, because 78907088143 - 29 = 78907087631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78907088153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1198773 + ... + 1262881.

It is an arithmetic number, because the mean of its divisors is an integer number (7121402910).

Almost surely, 278907088143 is an apocalyptic number.

78907088143 is a deficient number, since it is larger than the sum of its proper divisors (6549746777).

78907088143 is a wasteful number, since it uses less digits than its factorization.

78907088143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71418 (or 71405 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 78907088143 in words is "seventy-eight billion, nine hundred seven million, eighty-eight thousand, one hundred forty-three".

Divisors: 1 13 169 7283 64109 94679 833417 1230827 10834421 466905847 6069776011 78907088143