100321428787 has 2 divisors, whose sum is σ = 100321428788. Its totient is φ = 100321428786.

The previous prime is 100321428679. The next prime is 100321428793. The reversal of 100321428787 is 787824123001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100321428787 - 2¹⁹ = 100320904499 is a prime.

It is a super-2 number, since 2×100321428787² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100321438787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160714393 + 50160714394.

It is an arithmetic number, because the mean of its divisors is an integer number (50160714394).

Almost surely, 2^100321428787 is an apocalyptic number.

100321428787 is a deficient number, since it is larger than the sum of its proper divisors (1).

100321428787 is an equidigital number, since it uses as much as digits as its factorization.

100321428787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 100321428787 in words is "one hundred billion, three hundred twenty-one million, four hundred twenty-eight thousand, seven hundred eighty-seven".