99950042061 has 6 divisors (see below), whose sum is σ = 144372282990. Its totient is φ = 66633361368.

The previous prime is 99950042021. The next prime is 99950042099. The reversal of 99950042061 is 16024005999.

It can be written as a sum of positive squares in only one way, i.e., 97910164836 + 2039877225 = 312906^2 + 45165^2 .

It is not a de Polignac number, because 99950042061 - 2¹¹ = 99950040013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99950041998 and 99950042016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99950042021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5552780106 + ... + 5552780123.

It is an arithmetic number, because the mean of its divisors is an integer number (24062047165).

Almost surely, 2^99950042061 is an apocalyptic number.

It is an amenable number.

99950042061 is a deficient number, since it is larger than the sum of its proper divisors (44422240929).

99950042061 is a wasteful number, since it uses less digits than its factorization.

99950042061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105560235 (or 11105560232 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 99950042061 in words is "ninety-nine billion, nine hundred fifty million, forty-two thousand, sixty-one".