1251453706426 has 32 divisors (see below), whose sum is σ = 2341411256448. Its totient is φ = 487364720640.

The previous prime is 1251453706387. The next prime is 1251453706427. The reversal of 1251453706426 is 6246073541521.

It is a super-2 number, since 2×1251453706426² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1251453706427) 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, 1437535 + ... + 2137618.

It is an arithmetic number, because the mean of its divisors is an integer number (73169101764).

Almost surely, 2^{1251453706426} is an apocalyptic number.

1251453706426 is a deficient number, since it is larger than the sum of its proper divisors (1089957550022).

1251453706426 is a wasteful number, since it uses less digits than its factorization.

1251453706426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577446.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 1251453706426 in words is "one trillion, two hundred fifty-one billion, four hundred fifty-three million, seven hundred six thousand, four hundred twenty-six".