126261102773 has 12 divisors (see below), whose sum is σ = 136739572740. Its totient is φ = 116532539136.

The previous prime is 126261102739. The next prime is 126261102791. The reversal of 126261102773 is 377201162621.

It can be written as a sum of positive squares in 6 ways, for example, as 7524348049 + 118736754724 = 86743^2 + 344582^2 .

It is a de Polignac number, because none of the positive numbers 2^k-126261102773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126261107773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1269083 + ... + 1364951.

It is an arithmetic number, because the mean of its divisors is an integer number (11394964395).

Almost surely, 2^126261102773 is an apocalyptic number.

126261102773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

126261102773 is a deficient number, since it is larger than the sum of its proper divisors (10478469967).

126261102773 is an equidigital number, since it uses as much as digits as its factorization.

126261102773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103688 (or 103675 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 126261102773 in words is "one hundred twenty-six billion, two hundred sixty-one million, one hundred two thousand, seven hundred seventy-three".