1253444551979 has 2 divisors, whose sum is σ = 1253444551980. Its totient is φ = 1253444551978.

The previous prime is 1253444551889. The next prime is 1253444552023. The reversal of 1253444551979 is 9791554443521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1253444551979 - 2³⁶ = 1184725075243 is a prime.

It is a super-2 number, since 2×1253444551979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1253444556979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626722275989 + 626722275990.

It is an arithmetic number, because the mean of its divisors is an integer number (626722275990).

Almost surely, 2^{1253444551979} is an apocalyptic number.

1253444551979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253444551979 is an equidigital number, since it uses as much as digits as its factorization.

1253444551979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216000, while the sum is 59.

The spelling of 1253444551979 in words is "one trillion, two hundred fifty-three billion, four hundred forty-four million, five hundred fifty-one thousand, nine hundred seventy-nine".