1255510666040 has 32 divisors (see below), whose sum is σ = 2824945200000. Its totient is φ = 502196052864.

The previous prime is 1255510666027. The next prime is 1255510666057. The reversal of 1255510666040 is 406660155521.

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, 2616761 + ... + 3059159.

It is an arithmetic number, because the mean of its divisors is an integer number (88279537500).

Almost surely, 2^{1255510666040} is an apocalyptic number.

1255510666040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255510666040 is an abundant number, since it is smaller than the sum of its proper divisors (1569434533960).

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

1255510666040 is a wasteful number, since it uses less digits than its factorization.

1255510666040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513359 (or 513355 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 1255510666040 in words is "one trillion, two hundred fifty-five billion, five hundred ten million, six hundred sixty-six thousand, forty".