1611023486121 has 45 divisors (see below), whose sum is σ = 2799642358029. Its totient is φ = 920539155816.

The previous prime is 1611023486113. The next prime is 1611023486159. The reversal of 1611023486121 is 1216843201161.

The square root of 1611023486121 is 1269261.

It is a perfect power (a square), and thus also a powerful number.

1611023486121 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 0 + 2 + 34 + 8 + 612 + 1 = 666.

It is not a de Polignac number, because 1611023486121 - 2³ = 1611023486113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1611023486221) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 79953370 + ... + 79973516.

Almost surely, 2^{1611023486121} is an apocalyptic number.

1611023486121 is the 1269261-st square number.

1611023486121 is the 634631-st centered octagonal number.

It is an amenable number.

1611023486121 is a deficient number, since it is larger than the sum of its proper divisors (1188618871908).

1611023486121 is an frugal number, since it uses more digits than its factorization.

1611023486121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40320 (or 20157 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

Multiplying 1611023486121 by its sum of digits (36), we get a square (57996845500356 = 7615566²).

Adding to 1611023486121 its reverse (1216843201161), we get a palindrome (2827866687282).

The spelling of 1611023486121 in words is "one trillion, six hundred eleven billion, twenty-three million, four hundred eighty-six thousand, one hundred twenty-one".