107821738640 has 160 divisors (see below), whose sum is σ = 326132269056. Its totient is φ = 32145569280.

The previous prime is 107821738639. The next prime is 107821738649. The reversal of 107821738640 is 46837128701.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (107821738649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238832 + ... + 522191.

Almost surely, 2^107821738640 is an apocalyptic number.

107821738640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

107821738640 is an abundant number, since it is smaller than the sum of its proper divisors (218310530416).

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

107821738640 is a wasteful number, since it uses less digits than its factorization.

107821738640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761077 (or 761071 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 107821738640 in words is "one hundred seven billion, eight hundred twenty-one million, seven hundred thirty-eight thousand, six hundred forty".