107121747897 has 12 divisors (see below), whose sum is σ = 155098952164. Its totient is φ = 71244865440.

The previous prime is 107121747883. The next prime is 107121747907. The reversal of 107121747897 is 798747121701.

107121747897 is a `hidden beast` number, since 1 + 0 + 71 + 2 + 17 + 478 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15779379456 + 91342368441 = 125616^2 + 302229^2 .

It is not a de Polignac number, because 107121747897 - 2⁴ = 107121747881 is a prime.

It is a super-2 number, since 2×107121747897² (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 (107121747197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14132098 + ... + 14139675.

Almost surely, 2^107121747897 is an apocalyptic number.

It is an amenable number.

107121747897 is a deficient number, since it is larger than the sum of its proper divisors (47977204267).

107121747897 is a wasteful number, since it uses less digits than its factorization.

107121747897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28272200 (or 28272197 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 54.

The spelling of 107121747897 in words is "one hundred seven billion, one hundred twenty-one million, seven hundred forty-seven thousand, eight hundred ninety-seven".