126451779274 has 16 divisors (see below), whose sum is σ = 195817063680. Its totient is φ = 61179857280.

The previous prime is 126451779253. The next prime is 126451779277. The reversal of 126451779274 is 472977154621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (126451779277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509562 + ... + 715930.

It is an arithmetic number, because the mean of its divisors is an integer number (12238566480).

Almost surely, 2^126451779274 is an apocalyptic number.

126451779274 is a deficient number, since it is larger than the sum of its proper divisors (69365284406).

126451779274 is a wasteful number, since it uses less digits than its factorization.

126451779274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216285.

The product of its digits is 5927040, while the sum is 55.

The spelling of 126451779274 in words is "one hundred twenty-six billion, four hundred fifty-one million, seven hundred seventy-nine thousand, two hundred seventy-four".