109684151659457 has 4 divisors (see below), whose sum is σ = 109685170029396. Its totient is φ = 109683133289520.

The previous prime is 109684151659447. The next prime is 109684151659559. The reversal of 109684151659457 is 754956151486901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37914264391936 + 71769887267521 = 6157456^2 + 8471711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109684151659457 is a prime.

It is a super-2 number, since 2×109684151659457² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109684151659427) 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, 509023394 + ... + 509238827.

It is an arithmetic number, because the mean of its divisors is an integer number (27421292507349).

Almost surely, 2^{109684151659457} is an apocalyptic number.

It is an amenable number.

109684151659457 is a deficient number, since it is larger than the sum of its proper divisors (1018369939).

109684151659457 is a wasteful number, since it uses less digits than its factorization.

109684151659457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018369938.

The product of its (nonzero) digits is 326592000, while the sum is 71.

The spelling of 109684151659457 in words is "one hundred nine trillion, six hundred eighty-four billion, one hundred fifty-one million, six hundred fifty-nine thousand, four hundred fifty-seven".