1611601011580 has 48 divisors (see below), whose sum is σ = 3867950149056. Its totient is φ = 552533529600.

The previous prime is 1611601011569. The next prime is 1611601011583. The reversal of 1611601011580 is 851101061161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611601011583) 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, 5628442 + ... + 5907838.

It is an arithmetic number, because the mean of its divisors is an integer number (80582294772).

Almost surely, 2^{1611601011580} is an apocalyptic number.

1611601011580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1611601011580 is an abundant number, since it is smaller than the sum of its proper divisors (2256349137476).

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

1611601011580 is a wasteful number, since it uses less digits than its factorization.

1611601011580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320614 (or 320612 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 31.

The spelling of 1611601011580 in words is "one trillion, six hundred eleven billion, six hundred one million, eleven thousand, five hundred eighty".