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20415060797 = 238099771123
BaseRepresentation
bin10011000000110101…
…010001101100111101
31221200202112112121212
4103000311101230331
5313302223421142
613213433334205
71321622103455
oct230065215475
957622475555
1020415060797
11872685137a
123b58b67365
131c04690441
14db948ad65
157e7406d82
hex4c0d51b3d

20415060797 has 16 divisors (see below), whose sum is σ = 21369847680. Its totient is φ = 19465999872.

The previous prime is 20415060749. The next prime is 20415060817. The reversal of 20415060797 is 79706051402.

It is a cyclic number.

It is not a de Polignac number, because 20415060797 - 214 = 20415044413 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 (20415060707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18178478 + ... + 18179600.

It is an arithmetic number, because the mean of its divisors is an integer number (1335615480).

Almost surely, 220415060797 is an apocalyptic number.

It is an amenable number.

20415060797 is a deficient number, since it is larger than the sum of its proper divisors (954786883).

20415060797 is a wasteful number, since it uses less digits than its factorization.

20415060797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2932.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 20415060797 in words is "twenty billion, four hundred fifteen million, sixty thousand, seven hundred ninety-seven".

Divisors: 1 23 809 977 1123 18607 22471 25829 790393 908507 1097171 18179039 20895661 25234933 887611339 20415060797