100650421507 has 4 divisors (see below), whose sum is σ = 100663740856. Its totient is φ = 100637102160.

The previous prime is 100650421451. The next prime is 100650421517. The reversal of 100650421507 is 705124056001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705124056001 = 54401 ⋅12961601.

It is a cyclic number.

It is not a de Polignac number, because 100650421507 - 2³⁵ = 66290683139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100650421517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6648333 + ... + 6663454.

It is an arithmetic number, because the mean of its divisors is an integer number (25165935214).

Almost surely, 2^100650421507 is an apocalyptic number.

100650421507 is a deficient number, since it is larger than the sum of its proper divisors (13319349).

100650421507 is an equidigital number, since it uses as much as digits as its factorization.

100650421507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319348.

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 100650421507 its reverse (705124056001), we get a palindrome (805774477508).

The spelling of 100650421507 in words is "one hundred billion, six hundred fifty million, four hundred twenty-one thousand, five hundred seven".