120637687500 has 672 divisors, whose sum is σ = 437319402240. Its totient is φ = 28512000000.

The previous prime is 120637687493. The next prime is 120637687589. The reversal of 120637687500 is 5786736021.

120637687500 is a `hidden beast` number, since 1 + 2 + 0 + 63 + 7 + 6 + 87 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 1243687452 + ... + 1243687548.

It is an arithmetic number, because the mean of its divisors is an integer number (650772920).

Almost surely, 2^120637687500 is an apocalyptic number.

120637687500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120637687500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218659701120).

120637687500 is an abundant number, since it is smaller than the sum of its proper divisors (316681714740).

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

120637687500 is an equidigital number, since it uses as much as digits as its factorization.

120637687500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 120637687500 in words is "one hundred twenty billion, six hundred thirty-seven million, six hundred eighty-seven thousand, five hundred".