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68291811724 = 2243675926051
BaseRepresentation
bin111111100110100000…
…100101100110001100
320112021101002111002011
4333212200211212030
52104330200433344
651212310311004
74635222551623
oct774640454614
9215241074064
1068291811724
1126a64a46a24
121129a958464
136594592066
14343bbdc6ba
151b9a690d34
hexfe682598c

68291811724 has 24 divisors (see below), whose sum is σ = 124115233088. Its totient is φ = 32854021200.

The previous prime is 68291811683. The next prime is 68291811793. The reversal of 68291811724 is 42711819286.

68291811724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2951502 + ... + 2974549.

Almost surely, 268291811724 is an apocalyptic number.

It is an amenable number.

68291811724 is a deficient number, since it is larger than the sum of its proper divisors (55823421364).

68291811724 is a wasteful number, since it uses less digits than its factorization.

68291811724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926165 (or 5926163 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The spelling of 68291811724 in words is "sixty-eight billion, two hundred ninety-one million, eight hundred eleven thousand, seven hundred twenty-four".

Divisors: 1 2 4 43 67 86 134 172 268 2881 5762 11524 5926051 11852102 23704204 254820193 397045417 509640386 794090834 1019280772 1588181668 17072952931 34145905862 68291811724