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51406260415 = 5312017164429
BaseRepresentation
bin101111111000000011…
…010100100010111111
311220200120221121020221
4233320003110202333
51320240000313130
635340554322211
73466616001226
oct577003244277
9156616847227
1051406260415
111a88a548344
129b67a29367
134b03200b93
1426b93d1cbd
15150d07487a
hexbf80d48bf

51406260415 has 16 divisors (see below), whose sum is σ = 63709390080. Its totient is φ = 39778421760.

The previous prime is 51406260397. The next prime is 51406260439.

51406260415 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51406260415 - 27 = 51406260287 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230421 + ... + 394849.

It is an arithmetic number, because the mean of its divisors is an integer number (3981836880).

Almost surely, 251406260415 is an apocalyptic number.

51406260415 is a deficient number, since it is larger than the sum of its proper divisors (12303129665).

51406260415 is a wasteful number, since it uses less digits than its factorization.

51406260415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166482.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 51406260415 in words is "fifty-one billion, four hundred six million, two hundred sixty thousand, four hundred fifteen".

Divisors: 1 5 31 155 2017 10085 62527 164429 312635 822145 5097299 25486495 331653293 1658266465 10281252083 51406260415