106491325391 has 4 divisors (see below), whose sum is σ = 116172354984. Its totient is φ = 96810295800.

The previous prime is 106491325363. The next prime is 106491325403. The reversal of 106491325391 is 193523194601.

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 106491325391 - 2⁶ = 106491325327 is a prime.

It is a super-2 number, since 2×106491325391² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106491325321) 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, 4840514780 + ... + 4840514801.

It is an arithmetic number, because the mean of its divisors is an integer number (29043088746).

Almost surely, 2^106491325391 is an apocalyptic number.

106491325391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

106491325391 is a deficient number, since it is larger than the sum of its proper divisors (9681029593).

106491325391 is an equidigital number, since it uses as much as digits as its factorization.

106491325391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681029592.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 106491325391 in words is "one hundred six billion, four hundred ninety-one million, three hundred twenty-five thousand, three hundred ninety-one".