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76388138875 = 532272692093
BaseRepresentation
bin100011100100100010…
…1100111111101111011
321022011121202111222201
41013021011213331323
52222420330421000
655031530531031
75342653316146
oct1071105477573
9238147674881
1076388138875
112a43a127394
121297a296a77
137284a60c99
1439a91bd05d
151ec136796a
hex11c9167f7b

76388138875 has 16 divisors (see below), whose sum is σ = 95752399392. Its totient is φ = 60841279200.

The previous prime is 76388138873. The next prime is 76388138887. The reversal of 76388138875 is 57883188367.

It is not a de Polignac number, because 76388138875 - 21 = 76388138873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76388138873) 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, 1317672 + ... + 1374421.

It is an arithmetic number, because the mean of its divisors is an integer number (5984524962).

Almost surely, 276388138875 is an apocalyptic number.

76388138875 is a deficient number, since it is larger than the sum of its proper divisors (19364260517).

76388138875 is a wasteful number, since it uses less digits than its factorization.

76388138875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692335 (or 2692325 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 64.

The spelling of 76388138875 in words is "seventy-six billion, three hundred eighty-eight million, one hundred thirty-eight thousand, eight hundred seventy-five".

Divisors: 1 5 25 125 227 1135 5675 28375 2692093 13460465 67302325 336511625 611105111 3055525555 15277627775 76388138875