100605281051 has 4 divisors (see below), whose sum is σ = 109751215704. Its totient is φ = 91459346400.

The previous prime is 100605280969. The next prime is 100605281071. The reversal of 100605281051 is 150182506001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150182506001 = 11 ⋅13652955091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100605281051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100605281071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4572967310 + ... + 4572967331.

It is an arithmetic number, because the mean of its divisors is an integer number (27437803926).

Almost surely, 2^100605281051 is an apocalyptic number.

100605281051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100605281051 is a deficient number, since it is larger than the sum of its proper divisors (9145934653).

100605281051 is an equidigital number, since it uses as much as digits as its factorization.

100605281051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9145934652.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 100605281051 its reverse (150182506001), we get a palindrome (250787787052).

The spelling of 100605281051 in words is "one hundred billion, six hundred five million, two hundred eighty-one thousand, fifty-one".