100401333506 has 4 divisors (see below), whose sum is σ = 150602000262. Its totient is φ = 50200666752.

The previous prime is 100401333479. The next prime is 100401333523. The reversal of 100401333506 is 605333104001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79490727481 + 20910606025 = 281941^2 + 144605^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25100333375 + ... + 25100333378.

Almost surely, 2^100401333506 is an apocalyptic number.

100401333506 is a deficient number, since it is larger than the sum of its proper divisors (50200666756).

100401333506 is an equidigital number, since it uses as much as digits as its factorization.

100401333506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50200666755.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 100401333506 its reverse (605333104001), we get a palindrome (705734437507).

The spelling of 100401333506 in words is "one hundred billion, four hundred one million, three hundred thirty-three thousand, five hundred six".