990077409167 has 24 divisors (see below), whose sum is σ = 1244068299936. Its totient is φ = 771281280000.

The previous prime is 990077409163. The next prime is 990077409179. The reversal of 990077409167 is 761904770099.

It is not a de Polignac number, because 990077409167 - 2² = 990077409163 is a prime.

It is a super-2 number, since 2×990077409167² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990077409163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3030167 + ... + 3340967.

It is an arithmetic number, because the mean of its divisors is an integer number (51836179164).

Almost surely, 2^990077409167 is an apocalyptic number.

990077409167 is a deficient number, since it is larger than the sum of its proper divisors (253990890769).

990077409167 is a wasteful number, since it uses less digits than its factorization.

990077409167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314591 (or 314580 counting only the distinct ones).

The product of its (nonzero) digits is 6001128, while the sum is 59.

The spelling of 990077409167 in words is "nine hundred ninety billion, seventy-seven million, four hundred nine thousand, one hundred sixty-seven".