108641847949 has 2 divisors, whose sum is σ = 108641847950. Its totient is φ = 108641847948.

The previous prime is 108641847907. The next prime is 108641847959. The reversal of 108641847949 is 949748146801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102883770025 + 5758077924 = 320755^2 + 75882^2 .

It is a cyclic number.

It is not a de Polignac number, because 108641847949 - 2¹¹ = 108641845901 is a prime.

It is a super-2 number, since 2×108641847949² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108641847959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54320923974 + 54320923975.

It is an arithmetic number, because the mean of its divisors is an integer number (54320923975).

Almost surely, 2^108641847949 is an apocalyptic number.

It is an amenable number.

108641847949 is a deficient number, since it is larger than the sum of its proper divisors (1).

108641847949 is an equidigital number, since it uses as much as digits as its factorization.

108641847949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 108641847949 in words is "one hundred eight billion, six hundred forty-one million, eight hundred forty-seven thousand, nine hundred forty-nine".