106431747538 has 8 divisors (see below), whose sum is σ = 159675159420. Its totient is φ = 53206694400.

The previous prime is 106431747533. The next prime is 106431747557. The reversal of 106431747538 is 835747134601.

It can be written as a sum of positive squares in 2 ways, for example, as 84353650969 + 22078096569 = 290437^2 + 148587^2 .

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

It is a super-2 number, since 2×106431747538² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106431747491 and 106431747500.

It is not an unprimeable number, because it can be changed into a prime (106431747533) 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, 4575183 + ... + 4598386.

Almost surely, 2^106431747538 is an apocalyptic number.

106431747538 is a deficient number, since it is larger than the sum of its proper divisors (53243411882).

106431747538 is an equidigital number, since it uses as much as digits as its factorization.

106431747538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9179372.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 106431747538 in words is "one hundred six billion, four hundred thirty-one million, seven hundred forty-seven thousand, five hundred thirty-eight".