126650431061 has 16 divisors (see below), whose sum is σ = 158031699840. Its totient is φ = 98607482880.

The previous prime is 126650430979. The next prime is 126650431099. The reversal of 126650431061 is 160134056621.

It is a cyclic number.

It is not a de Polignac number, because 126650431061 - 2²² = 126646236757 is a prime.

It is a super-2 number, since 2×126650431061² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126650431361) 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, 582056 + ... + 769473.

It is an arithmetic number, because the mean of its divisors is an integer number (9876981240).

Almost surely, 2^126650431061 is an apocalyptic number.

126650431061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126650431061 is a deficient number, since it is larger than the sum of its proper divisors (31381268779).

126650431061 is a wasteful number, since it uses less digits than its factorization.

126650431061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352764.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 126650431061 its reverse (160134056621), we get a palindrome (286784487682).

The spelling of 126650431061 in words is "one hundred twenty-six billion, six hundred fifty million, four hundred thirty-one thousand, sixty-one".