1001615530440 has 128 divisors (see below), whose sum is σ = 3448479744000. Its totient is φ = 227982736128.

The previous prime is 1001615530439. The next prime is 1001615530457. The reversal of 1001615530440 is 440355161001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1001615530398 and 1001615530407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2293800 + ... + 2695319.

It is an arithmetic number, because the mean of its divisors is an integer number (26941248000).

Almost surely, 2^{1001615530440} is an apocalyptic number.

1001615530440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001615530440 is an abundant number, since it is smaller than the sum of its proper divisors (2446864213560).

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

1001615530440 is a wasteful number, since it uses less digits than its factorization.

1001615530440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989379 (or 4989375 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 1001615530440 in words is "one trillion, one billion, six hundred fifteen million, five hundred thirty thousand, four hundred forty".