207029939887 has 4 divisors (see below), whose sum is σ = 207033888456. Its totient is φ = 207025991320.

The previous prime is 207029939861. The next prime is 207029939911. The reversal of 207029939887 is 788939920702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207029939887 is a prime.

It is a super-2 number, since 2×207029939887² (a number of 23 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 (207029939387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894564 + ... + 2000857.

It is an arithmetic number, because the mean of its divisors is an integer number (51758472114).

Almost surely, 2^207029939887 is an apocalyptic number.

207029939887 is a deficient number, since it is larger than the sum of its proper divisors (3948569).

207029939887 is an equidigital number, since it uses as much as digits as its factorization.

207029939887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3948568.

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 207029939887 in words is "two hundred seven billion, twenty-nine million, nine hundred thirty-nine thousand, eight hundred eighty-seven".