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26978133023 = 137643306253
BaseRepresentation
bin11001001000000001…
…011010010000011111
32120122011010011011222
4121020001122100133
5420222400224043
620221003003555
71643354230022
oct311001322037
976564104158
1026978133023
11104944a8706
12528ab095bb
13270c2c572a
14143cd8d1b9
15a7d6b5d68
hex64805a41f

26978133023 has 8 divisors (see below), whose sum is σ = 27217405488. Its totient is φ = 26739474624.

The previous prime is 26978132977. The next prime is 26978133029. The reversal of 26978133023 is 32033187962.

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 26978133023 - 220 = 26977084447 is a prime.

It is a super-2 number, since 2×269781330232 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26978133029) 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, 65036 + ... + 241217.

It is an arithmetic number, because the mean of its divisors is an integer number (3402175686).

Almost surely, 226978133023 is an apocalyptic number.

26978133023 is a deficient number, since it is larger than the sum of its proper divisors (239272465).

26978133023 is a wasteful number, since it uses less digits than its factorization.

26978133023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307033.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 26978133023 in words is "twenty-six billion, nine hundred seventy-eight million, one hundred thirty-three thousand, twenty-three".

Divisors: 1 137 643 88091 306253 41956661 196920679 26978133023