101538409087 has 2 divisors, whose sum is σ = 101538409088. Its totient is φ = 101538409086.

The previous prime is 101538409073. The next prime is 101538409111. The reversal of 101538409087 is 780904835101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101538409087 - 2¹⁵ = 101538376319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101538409187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50769204543 + 50769204544.

It is an arithmetic number, because the mean of its divisors is an integer number (50769204544).

Almost surely, 2^101538409087 is an apocalyptic number.

101538409087 is a deficient number, since it is larger than the sum of its proper divisors (1).

101538409087 is an equidigital number, since it uses as much as digits as its factorization.

101538409087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 101538409087 in words is "one hundred one billion, five hundred thirty-eight million, four hundred nine thousand, eighty-seven".