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11978001470 = 251963042113
BaseRepresentation
bin10110010011111000…
…11100110000111110
31010220202201112001002
423021330130300332
5144012332021340
65300322050302
7602553222041
oct131174346076
933822645032
1011978001470
1150972a6876
1223a34a9992
13118b731846
14818b32c58
154a1877715
hex2c9f1cc3e

11978001470 has 16 divisors (see below), whose sum is σ = 22695161040. Its totient is φ = 4539032064.

The previous prime is 11978001461. The next prime is 11978001509. The reversal of 11978001470 is 7410087911.

It is a happy number.

11978001470 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31520867 + ... + 31521246.

It is an arithmetic number, because the mean of its divisors is an integer number (1418447565).

Almost surely, 211978001470 is an apocalyptic number.

11978001470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11978001470 is a deficient number, since it is larger than the sum of its proper divisors (10717159570).

11978001470 is a wasteful number, since it uses less digits than its factorization.

11978001470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63042139.

The product of its (nonzero) digits is 14112, while the sum is 38.

The spelling of 11978001470 in words is "eleven billion, nine hundred seventy-eight million, one thousand, four hundred seventy".

Divisors: 1 2 5 10 19 38 95 190 63042113 126084226 315210565 630421130 1197800147 2395600294 5989000735 11978001470