108538437821711 has 4 divisors (see below), whose sum is σ = 109016580719832. Its totient is φ = 108060294923592.

The previous prime is 108538437821689. The next prime is 108538437821731. The reversal of 108538437821711 is 117128734835801.

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

It is a cyclic number.

It is not a de Polignac number, because 108538437821711 - 2¹⁸ = 108538437559567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108538437821731) 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, 239071448720 + ... + 239071449173.

It is an arithmetic number, because the mean of its divisors is an integer number (27254145179958).

Almost surely, 2^{108538437821711} is an apocalyptic number.

108538437821711 is a deficient number, since it is larger than the sum of its proper divisors (478142898121).

108538437821711 is an equidigital number, since it uses as much as digits as its factorization.

108538437821711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478142898120.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 108538437821711 in words is "one hundred eight trillion, five hundred thirty-eight billion, four hundred thirty-seven million, eight hundred twenty-one thousand, seven hundred eleven".