1611223036420 has 24 divisors (see below), whose sum is σ = 3424334264064. Its totient is φ = 636724283616.

The previous prime is 1611223036393. The next prime is 1611223036463. The reversal of 1611223036420 is 246303221161.

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, 485306484 + ... + 485309803.

It is an arithmetic number, because the mean of its divisors is an integer number (142680594336).

Almost surely, 2^{1611223036420} is an apocalyptic number.

1611223036420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1611223036420 is an abundant number, since it is smaller than the sum of its proper divisors (1813111227644).

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

1611223036420 is a wasteful number, since it uses less digits than its factorization.

1611223036420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970616379 (or 970616377 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 1611223036420 its reverse (246303221161), we get a palindrome (1857526257581).

The spelling of 1611223036420 in words is "one trillion, six hundred eleven billion, two hundred twenty-three million, thirty-six thousand, four hundred twenty".