1253456941820 has 24 divisors (see below), whose sum is σ = 2632578484704. Its totient is φ = 501322032576.

The previous prime is 1253456941813. The next prime is 1253456941831. The reversal of 1253456941820 is 281496543521.

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, 3627119 + ... + 3957638.

It is an arithmetic number, because the mean of its divisors is an integer number (109690770196).

Almost surely, 2^{1253456941820} is an apocalyptic number.

1253456941820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253456941820 is an abundant number, since it is smaller than the sum of its proper divisors (1379121542884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253456941820 is a wasteful number, since it uses less digits than its factorization.

1253456941820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7593029 (or 7593027 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 1253456941820 in words is "one trillion, two hundred fifty-three billion, four hundred fifty-six million, nine hundred forty-one thousand, eight hundred twenty".