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55642408007 = 169940138161
BaseRepresentation
bin110011110100100010…
…111100010001000111
312022121211000012022012
4303310202330101013
51402423424024012
641321201524435
74006604443604
oct636442742107
9168554005265
1055642408007
112166376376a
12a94a64371b
135329a24aa4
14299bc576ab
1516a9de4622
hexcf48bc447

55642408007 has 8 divisors (see below), whose sum is σ = 55695855600. Its totient is φ = 55588988160.

The previous prime is 55642407979. The next prime is 55642408051. The reversal of 55642408007 is 70080424655.

55642408007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55642408007 - 224 = 55625630791 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 (55642408607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6814007 + ... + 6822167.

It is an arithmetic number, because the mean of its divisors is an integer number (6961981950).

Almost surely, 255642408007 is an apocalyptic number.

55642408007 is a deficient number, since it is larger than the sum of its proper divisors (53447593).

55642408007 is a wasteful number, since it uses less digits than its factorization.

55642408007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13873.

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 55642408007 in words is "fifty-five billion, six hundred forty-two million, four hundred eight thousand, seven".

Divisors: 1 1699 4013 8161 6818087 13865539 32750093 55642408007