100556140639 has 2 divisors, whose sum is σ = 100556140640. Its totient is φ = 100556140638.

The previous prime is 100556140621. The next prime is 100556140681. The reversal of 100556140639 is 936041655001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (936041655001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100556140639 - 2¹¹ = 100556138591 is a prime.

It is a super-2 number, since 2×100556140639² (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 (100556147639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50278070319 + 50278070320.

It is an arithmetic number, because the mean of its divisors is an integer number (50278070320).

Almost surely, 2^100556140639 is an apocalyptic number.

100556140639 is a deficient number, since it is larger than the sum of its proper divisors (1).

100556140639 is an equidigital number, since it uses as much as digits as its factorization.

100556140639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 100556140639 in words is "one hundred billion, five hundred fifty-six million, one hundred forty thousand, six hundred thirty-nine".