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68690753435 = 517808126511
BaseRepresentation
bin111111111110010010…
…011011011110011011
320120022011202211020002
4333332102123132123
52111134313102220
651320041123215
74651135525163
oct777622333633
9216264684202
1068690753435
112714a159817
121139048950b
136629122a45
143478ba95a3
151bc06e5c75
hexffe49b79b

68690753435 has 8 divisors (see below), whose sum is σ = 87277663296. Its totient is φ = 51720096640.

The previous prime is 68690753423. The next prime is 68690753441. The reversal of 68690753435 is 53435709686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68690753435 - 214 = 68690737051 is a prime.

It is a Duffinian 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, 404063171 + ... + 404063340.

It is an arithmetic number, because the mean of its divisors is an integer number (10909707912).

Almost surely, 268690753435 is an apocalyptic number.

68690753435 is a deficient number, since it is larger than the sum of its proper divisors (18586909861).

68690753435 is a wasteful number, since it uses less digits than its factorization.

68690753435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808126533.

The product of its (nonzero) digits is 16329600, while the sum is 56.

The spelling of 68690753435 in words is "sixty-eight billion, six hundred ninety million, seven hundred fifty-three thousand, four hundred thirty-five".

Divisors: 1 5 17 85 808126511 4040632555 13738150687 68690753435