101276997449 has 4 divisors (see below), whose sum is σ = 102279740100. Its totient is φ = 100274254800.

The previous prime is 101276997433. The next prime is 101276997533. The reversal of 101276997449 is 944799672101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 89501492224 + 11775505225 = 299168^2 + 108515^2 .

It is a cyclic number.

It is not a de Polignac number, because 101276997449 - 2⁴ = 101276997433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101276997049) 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, 501371174 + ... + 501371375.

It is an arithmetic number, because the mean of its divisors is an integer number (25569935025).

Almost surely, 2^101276997449 is an apocalyptic number.

It is an amenable number.

101276997449 is a deficient number, since it is larger than the sum of its proper divisors (1002742651).

101276997449 is a wasteful number, since it uses less digits than its factorization.

101276997449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002742650.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 101276997449 in words is "one hundred one billion, two hundred seventy-six million, nine hundred ninety-seven thousand, four hundred forty-nine".