209377712994 has 16 divisors (see below), whose sum is σ = 432263665920. Its totient is φ = 67541197680.

The previous prime is 209377712987. The next prime is 209377713001. The reversal of 209377712994 is 499217773902.

It is an interprime number because it is at equal distance from previous prime (209377712987) and next prime (209377713001).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562843129 + ... + 562843500.

It is an arithmetic number, because the mean of its divisors is an integer number (27016479120).

Almost surely, 2^209377712994 is an apocalyptic number.

209377712994 is an abundant number, since it is smaller than the sum of its proper divisors (222885952926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209377712994 is a wasteful number, since it uses less digits than its factorization.

209377712994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125686665.

The product of its (nonzero) digits is 12002256, while the sum is 60.

The spelling of 209377712994 in words is "two hundred nine billion, three hundred seventy-seven million, seven hundred twelve thousand, nine hundred ninety-four".