1001611445640 has 64 divisors (see below), whose sum is σ = 3235975444800. Its totient is φ = 246550509312.

The previous prime is 1001611445599. The next prime is 1001611445641. The reversal of 1001611445640 is 465441161001.

It is not an unprimeable number, because it can be changed into a prime (1001611445641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321027750 + ... + 321030869.

It is an arithmetic number, because the mean of its divisors is an integer number (50562116325).

Almost surely, 2^{1001611445640} is an apocalyptic number.

1001611445640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001611445640 is an abundant number, since it is smaller than the sum of its proper divisors (2234363999160).

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

1001611445640 is a wasteful number, since it uses less digits than its factorization.

1001611445640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642058646 (or 642058642 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 1001611445640 in words is "one trillion, one billion, six hundred eleven million, four hundred forty-five thousand, six hundred forty".