101081264506 has 4 divisors (see below), whose sum is σ = 151621896762. Its totient is φ = 50540632252.

The previous prime is 101081264497. The next prime is 101081264509. The reversal of 101081264506 is 605462180101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605462180101 = 88241 ⋅6861461.

It can be written as a sum of positive squares in only one way, i.e., 67630683481 + 33450581025 = 260059^2 + 182895^2 .

It is not an unprimeable number, because it can be changed into a prime (101081264509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25270316125 + ... + 25270316128.

Almost surely, 2^101081264506 is an apocalyptic number.

101081264506 is a deficient number, since it is larger than the sum of its proper divisors (50540632256).

101081264506 is an equidigital number, since it uses as much as digits as its factorization.

101081264506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50540632255.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 101081264506 in words is "one hundred one billion, eighty-one million, two hundred sixty-four thousand, five hundred six".