100605556087 has 2 divisors, whose sum is σ = 100605556088. Its totient is φ = 100605556086.

The previous prime is 100605556043. The next prime is 100605556097. The reversal of 100605556087 is 780655506001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100605556087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100605556097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50302778043 + 50302778044.

It is an arithmetic number, because the mean of its divisors is an integer number (50302778044).

Almost surely, 2^100605556087 is an apocalyptic number.

100605556087 is a deficient number, since it is larger than the sum of its proper divisors (1).

100605556087 is an equidigital number, since it uses as much as digits as its factorization.

100605556087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 100605556087 in words is "one hundred billion, six hundred five million, five hundred fifty-six thousand, eighty-seven".