207620449128 has 64 divisors (see below), whose sum is σ = 596610504000. Its totient is φ = 66820372416.

The previous prime is 207620449123. The next prime is 207620449163. The reversal of 207620449128 is 821944026702.

207620449128 is a `hidden beast` number, since 2 + 0 + 7 + 620 + 4 + 4 + 9 + 12 + 8 = 666.

It is a super-2 number, since 2×207620449128² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (207620449123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16566250 + ... + 16578777.

It is an arithmetic number, because the mean of its divisors is an integer number (9322039125).

Almost surely, 2^207620449128 is an apocalyptic number.

It is an amenable number.

207620449128 is an abundant number, since it is smaller than the sum of its proper divisors (388990054872).

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

207620449128 is a wasteful number, since it uses less digits than its factorization.

207620449128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33145071 (or 33145061 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 207620449128 in words is "two hundred seven billion, six hundred twenty million, four hundred forty-nine thousand, one hundred twenty-eight".