1253777771068 has 24 divisors (see below), whose sum is σ = 2265055729664. Its totient is φ = 606621970800.

The previous prime is 1253777771039. The next prime is 1253777771093. The reversal of 1253777771068 is 8601777773521.

It is a junction number, because it is equal to n+sod(n) for n = 1253777770997 and 1253777771015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349521 + ... + 2080567.

Almost surely, 2^{1253777771068} is an apocalyptic number.

It is an amenable number.

1253777771068 is a deficient number, since it is larger than the sum of its proper divisors (1011277958596).

1253777771068 is a wasteful number, since it uses less digits than its factorization.

1253777771068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744913 (or 744911 counting only the distinct ones).

The product of its (nonzero) digits is 24202080, while the sum is 61.

The spelling of 1253777771068 in words is "one trillion, two hundred fifty-three billion, seven hundred seventy-seven million, seven hundred seventy-one thousand, sixty-eight".