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68501372802 = 2352121913427
BaseRepresentation
bin111111110010111111…
…111111111110000010
320112210222102021211120
4333302333333332002
52110242322412202
651245154053110
74643346030102
oct776277777602
9215728367746
1068501372802
112706226a2a5
1211338b7a196
1365c8b161b5
14345b98d202
151badc880bc
hexff2ffff82

68501372802 has 16 divisors (see below), whose sum is σ = 137265712992. Its totient is φ = 22789963040.

The previous prime is 68501372777. The next prime is 68501372813. The reversal of 68501372802 is 20827310586.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 10953588 + ... + 10959839.

It is an arithmetic number, because the mean of its divisors is an integer number (8579107062).

Almost surely, 268501372802 is an apocalyptic number.

68501372802 is an abundant number, since it is smaller than the sum of its proper divisors (68764340190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68501372802 is a wasteful number, since it uses less digits than its factorization.

68501372802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21913953.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 68501372802 in words is "sixty-eight billion, five hundred one million, three hundred seventy-two thousand, eight hundred two".

Divisors: 1 2 3 6 521 1042 1563 3126 21913427 43826854 65740281 131480562 11416895467 22833790934 34250686401 68501372802