126186630843657 has 16 divisors (see below), whose sum is σ = 174577510282112. Its totient is φ = 81006965015040.

The previous prime is 126186630843641. The next prime is 126186630843677. The reversal of 126186630843657 is 756348036681621.

It is a happy number.

It is not a de Polignac number, because 126186630843657 - 2⁴ = 126186630843641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126186630843677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5859868069 + ... + 5859889602.

It is an arithmetic number, because the mean of its divisors is an integer number (10911094392632).

Almost surely, 2^{126186630843657} is an apocalyptic number.

It is an amenable number.

126186630843657 is a deficient number, since it is larger than the sum of its proper divisors (48390879438455).

126186630843657 is a wasteful number, since it uses less digits than its factorization.

126186630843657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11719757808.

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 126186630843657 in words is "one hundred twenty-six trillion, one hundred eighty-six billion, six hundred thirty million, eight hundred forty-three thousand, six hundred fifty-seven".