2061153977121 has 24 divisors (see below), whose sum is σ = 3035886357504. Its totient is φ = 1347173739360.

The previous prime is 2061153977119. The next prime is 2061153977131. The reversal of 2061153977121 is 1217793511602.

2061153977121 is a `hidden beast` number, since 2 + 0 + 611 + 5 + 3 + 9 + 7 + 7 + 1 + 21 = 666.

It is not a de Polignac number, because 2061153977121 - 2¹ = 2061153977119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2061153977131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5946081 + ... + 6283166.

It is an arithmetic number, because the mean of its divisors is an integer number (126495264896).

Almost surely, 2^{2061153977121} is an apocalyptic number.

It is an amenable number.

2061153977121 is a deficient number, since it is larger than the sum of its proper divisors (974732380383).

2061153977121 is a wasteful number, since it uses less digits than its factorization.

2061153977121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12229621 (or 12229618 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 2061153977121 in words is "two trillion, sixty-one billion, one hundred fifty-three million, nine hundred seventy-seven thousand, one hundred twenty-one".