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67387997901 = 377145196511
BaseRepresentation
bin111110110000101000…
…110011111011001101
320102221101101222121010
4332300220303323031
52101002311413101
650542502355433
74603636350120
oct766050637315
9212841358533
1067387997901
112664084a254
121108812bb79
13647c261793
143393b6c3b7
151b4615e2d6
hexfb0a33ecd

67387997901 has 16 divisors (see below), whose sum is σ = 104132763648. Its totient is φ = 37965068400.

The previous prime is 67387997899. The next prime is 67387997903. The reversal of 67387997901 is 10979978376.

It is an interprime number because it is at equal distance from previous prime (67387997899) and next prime (67387997903).

It is not a de Polignac number, because 67387997901 - 21 = 67387997899 is a prime.

It is a super-2 number, since 2×673879979012 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67387997903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22596765 + ... + 22599746.

It is an arithmetic number, because the mean of its divisors is an integer number (6508297728).

Almost surely, 267387997901 is an apocalyptic number.

It is an amenable number.

67387997901 is a deficient number, since it is larger than the sum of its proper divisors (36744765747).

67387997901 is a wasteful number, since it uses less digits than its factorization.

67387997901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45196592.

The product of its (nonzero) digits is 36006768, while the sum is 66.

The spelling of 67387997901 in words is "sixty-seven billion, three hundred eighty-seven million, nine hundred ninety-seven thousand, nine hundred one".

Divisors: 1 3 7 21 71 213 497 1491 45196511 135589533 316375577 949126731 3208952281 9626856843 22462665967 67387997901