1253355020540 has 48 divisors (see below), whose sum is σ = 3008729966592. Its totient is φ = 429624876096.

The previous prime is 1253355020497. The next prime is 1253355020551. The reversal of 1253355020540 is 450205533521.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1253355020540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384002 + ... + 1629161.

It is an arithmetic number, because the mean of its divisors is an integer number (62681874304).

Almost surely, 2^{1253355020540} is an apocalyptic number.

1253355020540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253355020540 is an abundant number, since it is smaller than the sum of its proper divisors (1755374946052).

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

1253355020540 is a wasteful number, since it uses less digits than its factorization.

1253355020540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017626 (or 2017624 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 1253355020540 in words is "one trillion, two hundred fifty-three billion, three hundred fifty-five million, twenty thousand, five hundred forty".