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155998206001 = 1171239835739
BaseRepresentation
bin1001000101001000110…
…1111011100000110001
3112220122210010221122101
42101102031323200301
510023441020043001
6155355314540401
714161531605211
oct2212215734061
9486583127571
10155998206001
1160181a140a0
1226297597701
131193116a791
14779c254241
1540d04b0a01
hex245237b831

155998206001 has 16 divisors (see below), whose sum is σ = 173299046400. Its totient is φ = 139233950800.

The previous prime is 155998205999. The next prime is 155998206041. The reversal of 155998206001 is 100602899551.

It is a cyclic number.

It is not a de Polignac number, because 155998206001 - 21 = 155998205999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155998206041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231211 + ... + 604528.

It is an arithmetic number, because the mean of its divisors is an integer number (10831190400).

Almost surely, 2155998206001 is an apocalyptic number.

155998206001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155998206001 is a deficient number, since it is larger than the sum of its proper divisors (17300840399).

155998206001 is a wasteful number, since it uses less digits than its factorization.

155998206001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836060.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 155998206001 in words is "one hundred fifty-five billion, nine hundred ninety-eight million, two hundred six thousand, one".

Divisors: 1 11 71 239 781 2629 16969 186659 835739 9193129 59337469 199741621 652712159 2197157831 14181655091 155998206001