107721407981 has 8 divisors (see below), whose sum is σ = 119440727328. Its totient is φ = 96323166000.

The previous prime is 107721407977. The next prime is 107721408023. The reversal of 107721407981 is 189704127701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 107721407981 - 2² = 107721407977 is a prime.

It is a super-2 number, since 2×107721407981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107721409981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80268635 + ... + 80269976.

It is an arithmetic number, because the mean of its divisors is an integer number (14930090916).

Almost surely, 2^107721407981 is an apocalyptic number.

107721407981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

107721407981 is a deficient number, since it is larger than the sum of its proper divisors (11719319347).

107721407981 is a wasteful number, since it uses less digits than its factorization.

107721407981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160538683.

The product of its (nonzero) digits is 197568, while the sum is 47.

The spelling of 107721407981 in words is "one hundred seven billion, seven hundred twenty-one million, four hundred seven thousand, nine hundred eighty-one".