101888661887 has 2 divisors, whose sum is σ = 101888661888. Its totient is φ = 101888661886.

The previous prime is 101888661841. The next prime is 101888661893. The reversal of 101888661887 is 788166888101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101888661887 - 2¹² = 101888657791 is a prime.

It is a super-2 number, since 2×101888661887² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101888661817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50944330943 + 50944330944.

It is an arithmetic number, because the mean of its divisors is an integer number (50944330944).

Almost surely, 2^101888661887 is an apocalyptic number.

101888661887 is a deficient number, since it is larger than the sum of its proper divisors (1).

101888661887 is an equidigital number, since it uses as much as digits as its factorization.

101888661887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8257536, while the sum is 62.

The spelling of 101888661887 in words is "one hundred one billion, eight hundred eighty-eight million, six hundred sixty-one thousand, eight hundred eighty-seven".