1253347655427 has 96 divisors (see below), whose sum is σ = 2108019723264. Its totient is φ = 702849312000.

The previous prime is 1253347655393. The next prime is 1253347655453. The reversal of 1253347655427 is 7245567433521.

1253347655427 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 34 + 7 + 65 + 542 + 7 = 666.

It is not a de Polignac number, because 1253347655427 - 2⁸ = 1253347655171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253347655467) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 421859052 + ... + 421862022.

It is an arithmetic number, because the mean of its divisors is an integer number (21958538784).

Almost surely, 2^{1253347655427} is an apocalyptic number.

1253347655427 is a deficient number, since it is larger than the sum of its proper divisors (854672067837).

1253347655427 is a wasteful number, since it uses less digits than its factorization.

1253347655427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649 (or 3646 counting only the distinct ones).

The product of its digits is 21168000, while the sum is 54.

The spelling of 1253347655427 in words is "one trillion, two hundred fifty-three billion, three hundred forty-seven million, six hundred fifty-five thousand, four hundred twenty-seven".