126985488641 has 4 divisors (see below), whose sum is σ = 138529623984. Its totient is φ = 115441353300.

The previous prime is 126985488583. The next prime is 126985488673. The reversal of 126985488641 is 146884589621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126985488641 is a prime.

It is a super-2 number, since 2×126985488641² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126985488341) 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, 5772067655 + ... + 5772067676.

It is an arithmetic number, because the mean of its divisors is an integer number (34632405996).

Almost surely, 2^126985488641 is an apocalyptic number.

126985488641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126985488641 is a deficient number, since it is larger than the sum of its proper divisors (11544135343).

126985488641 is a wasteful number, since it uses less digits than its factorization.

126985488641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11544135342.

The product of its digits is 26542080, while the sum is 62.

The spelling of 126985488641 in words is "one hundred twenty-six billion, nine hundred eighty-five million, four hundred eighty-eight thousand, six hundred forty-one".