107720615838 has 64 divisors (see below), whose sum is σ = 248955856128. Its totient is φ = 30709624320.

The previous prime is 107720615833. The next prime is 107720615869. The reversal of 107720615838 is 838516027701.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107720615833) 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, 2850181 + ... + 2887727.

It is an arithmetic number, because the mean of its divisors is an integer number (3889935252).

Almost surely, 2^107720615838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 107720615838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124477928064).

107720615838 is an abundant number, since it is smaller than the sum of its proper divisors (141235240290).

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

107720615838 is a wasteful number, since it uses less digits than its factorization.

107720615838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40137.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 107720615838 in words is "one hundred seven billion, seven hundred twenty million, six hundred fifteen thousand, eight hundred thirty-eight".