109457973987 has 8 divisors (see below), whose sum is σ = 145950705936. Its totient is φ = 72968612352.

The previous prime is 109457973949. The next prime is 109457973991. The reversal of 109457973987 is 789379754901.

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

It is not a de Polignac number, because 109457973987 - 2¹¹ = 109457971939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109457973907) 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, 765798 + ... + 897419.

It is an arithmetic number, because the mean of its divisors is an integer number (18243838242).

Almost surely, 2^109457973987 is an apocalyptic number.

109457973987 is a deficient number, since it is larger than the sum of its proper divisors (36492731949).

109457973987 is a wasteful number, since it uses less digits than its factorization.

109457973987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685157.

The product of its (nonzero) digits is 120022560, while the sum is 69.

The spelling of 109457973987 in words is "one hundred nine billion, four hundred fifty-seven million, nine hundred seventy-three thousand, nine hundred eighty-seven".