207340640820 has 72 divisors (see below), whose sum is σ = 629019780480. Its totient is φ = 55283232960.

The previous prime is 207340640783. The next prime is 207340640821. The reversal of 207340640820 is 28046043702.

207340640820 is a `hidden beast` number, since 2 + 0 + 7 + 3 + 4 + 0 + 640 + 8 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207340640821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1299625 + ... + 1450415.

It is an arithmetic number, because the mean of its divisors is an integer number (8736385840).

Almost surely, 2^207340640820 is an apocalyptic number.

207340640820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207340640820 is an abundant number, since it is smaller than the sum of its proper divisors (421679139660).

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

207340640820 is a wasteful number, since it uses less digits than its factorization.

207340640820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158445 (or 158440 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 207340640820 in words is "two hundred seven billion, three hundred forty million, six hundred forty thousand, eight hundred twenty".