99776170447405 has 8 divisors (see below), whose sum is σ = 119746847818872. Its totient is φ = 79810640836608.

The previous prime is 99776170447399. The next prime is 99776170447409. The reversal of 99776170447405 is 50474407167799.

It can be written as a sum of positive squares in 4 ways, for example, as 12836248038441 + 86939922408964 = 3582771^2 + 9324158^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99776170447405 - 2¹⁹ = 99776169923117 is a prime.

It is a super-2 number, since 2×99776170447405² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99776170447409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286897524 + ... + 1286975053.

It is an arithmetic number, because the mean of its divisors is an integer number (14968355977359).

Almost surely, 2^{99776170447405} is an apocalyptic number.

It is an amenable number.

99776170447405 is a deficient number, since it is larger than the sum of its proper divisors (19970677371467).

99776170447405 is a wasteful number, since it uses less digits than its factorization.

99776170447405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573880335.

The product of its (nonzero) digits is 373403520, while the sum is 70.

The spelling of 99776170447405 in words is "ninety-nine trillion, seven hundred seventy-six billion, one hundred seventy million, four hundred forty-seven thousand, four hundred five".