126748786541 has 32 divisors (see below), whose sum is σ = 146388060000. Its totient is φ = 108703457280.

The previous prime is 126748786513. The next prime is 126748786543. The reversal of 126748786541 is 145687847621.

It can be written as a sum of positive squares in 16 ways, for example, as 46072905316 + 80675881225 = 214646^2 + 284035^2 .

It is a cyclic number.

It is not a de Polignac number, because 126748786541 - 2²² = 126744592237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126748786543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12996335 + ... + 13006083.

It is an arithmetic number, because the mean of its divisors is an integer number (4574626875).

Almost surely, 2^126748786541 is an apocalyptic number.

It is an amenable number.

126748786541 is a deficient number, since it is larger than the sum of its proper divisors (19639273459).

126748786541 is a wasteful number, since it uses less digits than its factorization.

126748786541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10529.

The product of its digits is 18063360, while the sum is 59.

The spelling of 126748786541 in words is "one hundred twenty-six billion, seven hundred forty-eight million, seven hundred eighty-six thousand, five hundred forty-one".