200717642540 has 24 divisors (see below), whose sum is σ = 424092989040. Its totient is φ = 79794497088.

The previous prime is 200717642507. The next prime is 200717642549. The reversal of 200717642540 is 45246717002.

It is a junction number, because it is equal to n+sod(n) for n = 200717642494 and 200717642503.

It is not an unprimeable number, because it can be changed into a prime (200717642549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30781655 + ... + 30788174.

It is an arithmetic number, because the mean of its divisors is an integer number (17670541210).

Almost surely, 2^200717642540 is an apocalyptic number.

200717642540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200717642540 is an abundant number, since it is smaller than the sum of its proper divisors (223375346500).

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

200717642540 is a wasteful number, since it uses less digits than its factorization.

200717642540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61570001 (or 61569999 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 200717642540 in words is "two hundred billion, seven hundred seventeen million, six hundred forty-two thousand, five hundred forty".