126945149378 has 4 divisors (see below), whose sum is σ = 190417724070. Its totient is φ = 63472574688.

The previous prime is 126945149363. The next prime is 126945149413. The reversal of 126945149378 is 873941549621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 124985582089 + 1959567289 = 353533^2 + 44267^2 .

It is a super-2 number, since 2×126945149378² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31736287343 + ... + 31736287346.

Almost surely, 2^126945149378 is an apocalyptic number.

126945149378 is a deficient number, since it is larger than the sum of its proper divisors (63472574692).

126945149378 is an equidigital number, since it uses as much as digits as its factorization.

126945149378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63472574691.

The product of its digits is 13063680, while the sum is 59.

The spelling of 126945149378 in words is "one hundred twenty-six billion, nine hundred forty-five million, one hundred forty-nine thousand, three hundred seventy-eight".