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1011401911691 is a prime number
BaseRepresentation
bin11101011011111000100…
…00000110110110001011
310120200121100010112220122
432231330100012312023
5113032322342133231
62052344233013455
7133033324255043
oct16557420066613
93520540115818
101011401911691
1135aa2a014a06
1214402455428b
13744b4553952
1436d48858723
151b49774577b
hexeb7c406d8b

1011401911691 has 2 divisors, whose sum is σ = 1011401911692. Its totient is φ = 1011401911690.

The previous prime is 1011401911643. The next prime is 1011401911727. The reversal of 1011401911691 is 1961191041101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011401911691 - 218 = 1011401649547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011401911631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505700955845 + 505700955846.

It is an arithmetic number, because the mean of its divisors is an integer number (505700955846).

Almost surely, 21011401911691 is an apocalyptic number.

1011401911691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011401911691 is an equidigital number, since it uses as much as digits as its factorization.

1011401911691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 35.

Adding to 1011401911691 its reverse (1961191041101), we get a palindrome (2972592952792).

The spelling of 1011401911691 in words is "one trillion, eleven billion, four hundred one million, nine hundred eleven thousand, six hundred ninety-one".