126645629657 has 8 divisors (see below), whose sum is σ = 134101010592. Its totient is φ = 119190875200.

The previous prime is 126645629653. The next prime is 126645629689. The reversal of 126645629657 is 756926546621.

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

It is a cyclic number.

It is not a de Polignac number, because 126645629657 - 2² = 126645629653 is a prime.

It is a super-2 number, since 2×126645629657² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126645629596 and 126645629605.

It is not an unprimeable number, because it can be changed into a prime (126645629653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297182 + ... + 584472.

It is an arithmetic number, because the mean of its divisors is an integer number (16762626324).

Almost surely, 2^126645629657 is an apocalyptic number.

126645629657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

126645629657 is a deficient number, since it is larger than the sum of its proper divisors (7455380935).

126645629657 is a wasteful number, since it uses less digits than its factorization.

126645629657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313239.

The product of its digits is 32659200, while the sum is 59.

The spelling of 126645629657 in words is "one hundred twenty-six billion, six hundred forty-five million, six hundred twenty-nine thousand, six hundred fifty-seven".