107075989721 has 4 divisors (see below), whose sum is σ = 107077161444. Its totient is φ = 107074818000.

The previous prime is 107075989687. The next prime is 107075989781. The reversal of 107075989721 is 127989570701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 127989570701 = 151 ⋅847613051.

It can be written as a sum of positive squares in 2 ways, for example, as 93629268121 + 13446721600 = 305989^2 + 115960^2 .

It is a cyclic number.

It is not a de Polignac number, because 107075989721 - 2²² = 107071795417 is a prime.

It is a super-2 number, since 2×107075989721² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107075989781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436010 + ... + 635811.

It is an arithmetic number, because the mean of its divisors is an integer number (26769290361).

Almost surely, 2^107075989721 is an apocalyptic number.

It is an amenable number.

107075989721 is a deficient number, since it is larger than the sum of its proper divisors (1171723).

107075989721 is an equidigital number, since it uses as much as digits as its factorization.

107075989721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171722.

The product of its (nonzero) digits is 2222640, while the sum is 56.

The spelling of 107075989721 in words is "one hundred seven billion, seventy-five million, nine hundred eighty-nine thousand, seven hundred twenty-one".