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68148874754 = 21371931288697
BaseRepresentation
bin111111011101111111…
…010100111000000010
320111220102010112102022
4333131333110320002
52104032102443004
651150202521442
74631535610022
oct773577247002
9214812115368
1068148874754
11269a12992a4
121125ab06282
136570a96c7c
143426c31a82
151b8cd592be
hexfddfd4e02

68148874754 has 16 divisors (see below), whose sum is σ = 103503068568. Its totient is φ = 33650429952.

The previous prime is 68148874733. The next prime is 68148874793. The reversal of 68148874754 is 45747884186.

It can be written as a sum of positive squares in 4 ways, for example, as 29427687025 + 38721187729 = 171545^2 + 196777^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591467 + ... + 697230.

Almost surely, 268148874754 is an apocalyptic number.

68148874754 is a deficient number, since it is larger than the sum of its proper divisors (35354193814).

68148874754 is a wasteful number, since it uses less digits than its factorization.

68148874754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289029.

The product of its digits is 48168960, while the sum is 62.

The spelling of 68148874754 in words is "sixty-eight billion, one hundred forty-eight million, eight hundred seventy-four thousand, seven hundred fifty-four".

Divisors: 1 2 137 193 274 386 26441 52882 1288697 2577394 176551489 248718521 353102978 497437042 34074437377 68148874754