177990385699 has 6 divisors (see below), whose sum is σ = 207050040564. Its totient is φ = 152563187700.

The previous prime is 177990385697. The next prime is 177990385723. The reversal of 177990385699 is 996583099771.

It is not a de Polignac number, because 177990385699 - 2¹ = 177990385697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (177990385693) 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, 1816228377 + ... + 1816228474.

It is an arithmetic number, because the mean of its divisors is an integer number (34508340094).

Almost surely, 2^177990385699 is an apocalyptic number.

177990385699 is a deficient number, since it is larger than the sum of its proper divisors (29059654865).

177990385699 is an equidigital number, since it uses as much as digits as its factorization.

177990385699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632456865 (or 3632456858 counting only the distinct ones).

The product of its (nonzero) digits is 231472080, while the sum is 73.

The spelling of 177990385699 in words is "one hundred seventy-seven billion, nine hundred ninety million, three hundred eighty-five thousand, six hundred ninety-nine".