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101111001000991 is a prime number
BaseRepresentation
bin10110111111010110111101…
…010011000010110000011111
3111021000010011111201001100121
4112333112331103002300133
5101223100312224012431
6555013430321535411
730204012601632052
oct2677267523026037
9437003144631317
10101111001000991
112a242a3111a023
12b40bba57a4567
13445595a109357
141ad7b2736aa99
15ba51e0e5b611
hex5bf5bd4c2c1f

101111001000991 has 2 divisors, whose sum is σ = 101111001000992. Its totient is φ = 101111001000990.

The previous prime is 101111001000973. The next prime is 101111001001019. The reversal of 101111001000991 is 199000100111101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101111001000991 - 227 = 101110866783263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101111001900991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555500500495 + 50555500500496.

It is an arithmetic number, because the mean of its divisors is an integer number (50555500500496).

Almost surely, 2101111001000991 is an apocalyptic number.

101111001000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111001000991 is an equidigital number, since it uses as much as digits as its factorization.

101111001000991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 25.

The spelling of 101111001000991 in words is "one hundred one trillion, one hundred eleven billion, one million, nine hundred ninety-one", and thus it is an aban number.