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68372837429 = 13192274013041
BaseRepresentation
bin111111101011010101…
…101011010000110101
320112111000120000110012
4333223111223100311
52110011421244204
651224323110005
74640225346311
oct775325532065
9215430500405
1068372837429
1126aa6758816
1211301b12305
1365a82c1270
143448890b41
151ba284876e
hexfeb56b435

68372837429 has 32 divisors (see below), whose sum is σ = 78068914560. Its totient is φ = 59360256000.

The previous prime is 68372837389. The next prime is 68372837447. The reversal of 68372837429 is 92473827386.

It is a de Polignac number, because none of the positive numbers 2k-68372837429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68372837329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22482149 + ... + 22485189.

It is an arithmetic number, because the mean of its divisors is an integer number (2439653580).

Almost surely, 268372837429 is an apocalyptic number.

It is an amenable number.

68372837429 is a deficient number, since it is larger than the sum of its proper divisors (9696077131).

68372837429 is a wasteful number, since it uses less digits than its factorization.

68372837429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701.

The product of its digits is 24385536, while the sum is 59.

The spelling of 68372837429 in words is "sixty-eight billion, three hundred seventy-two million, eight hundred thirty-seven thousand, four hundred twenty-nine".

Divisors: 1 13 19 227 247 401 2951 3041 4313 5213 7619 39533 56069 57779 91027 99047 690307 751127 1183351 1219441 1729513 8973991 13115833 15852733 22483669 23169379 170505829 276813107 301201927 3598570391 5259449033 68372837429