1005002155540 has 48 divisors (see below), whose sum is σ = 2167946186112. Its totient is φ = 391063614336.

The previous prime is 1005002155537. The next prime is 1005002155571. The reversal of 1005002155540 is 455512005001.

It is a junction number, because it is equal to n+sod(n) for n = 1005002155499 and 1005002155508.

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, 3967119 + ... + 4212841.

It is an arithmetic number, because the mean of its divisors is an integer number (45165545544).

Almost surely, 2^{1005002155540} is an apocalyptic number.

1005002155540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005002155540 is an abundant number, since it is smaller than the sum of its proper divisors (1162944030572).

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

1005002155540 is a wasteful number, since it uses less digits than its factorization.

1005002155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251296 (or 251294 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 1005002155540 in words is "one trillion, five billion, two million, one hundred fifty-five thousand, five hundred forty".