100491533266 has 4 divisors (see below), whose sum is σ = 150737299902. Its totient is φ = 50245766632.

The previous prime is 100491533213. The next prime is 100491533291. The reversal of 100491533266 is 662335194001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662335194001 = 13 ⋅50948861077.

It can be written as a sum of positive squares in only one way, i.e., 54407895025 + 46083638241 = 233255^2 + 214671^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25122883315 + ... + 25122883318.

Almost surely, 2^100491533266 is an apocalyptic number.

100491533266 is a deficient number, since it is larger than the sum of its proper divisors (50245766636).

100491533266 is an equidigital number, since it uses as much as digits as its factorization.

100491533266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50245766635.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 100491533266 in words is "one hundred billion, four hundred ninety-one million, five hundred thirty-three thousand, two hundred sixty-six".