99081570749 has 4 divisors (see below), whose sum is σ = 113236080864. Its totient is φ = 84927060636.

The previous prime is 99081570739. The next prime is 99081570779. The reversal of 99081570749 is 94707518099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99081570749 - 2¹² = 99081566653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99081570739) 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, 7077255047 + ... + 7077255060.

It is an arithmetic number, because the mean of its divisors is an integer number (28309020216).

Almost surely, 2^99081570749 is an apocalyptic number.

It is an amenable number.

99081570749 is a deficient number, since it is larger than the sum of its proper divisors (14154510115).

99081570749 is a wasteful number, since it uses less digits than its factorization.

99081570749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14154510114.

The product of its (nonzero) digits is 5715360, while the sum is 59.

The spelling of 99081570749 in words is "ninety-nine billion, eighty-one million, five hundred seventy thousand, seven hundred forty-nine".