1253978900828 has 12 divisors (see below), whose sum is σ = 2253772889592. Its totient is φ = 610043789520.

The previous prime is 1253978900827. The next prime is 1253978900873. The reversal of 1253978900828 is 8280098793521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253978900827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4236415058 + ... + 4236415353.

It is an arithmetic number, because the mean of its divisors is an integer number (187814407466).

Almost surely, 2^{1253978900828} is an apocalyptic number.

It is an amenable number.

1253978900828 is a deficient number, since it is larger than the sum of its proper divisors (999793988764).

1253978900828 is a wasteful number, since it uses less digits than its factorization.

1253978900828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8472830452 (or 8472830450 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 1253978900828 in words is "one trillion, two hundred fifty-three billion, nine hundred seventy-eight million, nine hundred thousand, eight hundred twenty-eight".