2005701557121 has 24 divisors (see below), whose sum is σ = 3030979700736. Its totient is φ = 1275658623360.

The previous prime is 2005701557117. The next prime is 2005701557191. The reversal of 2005701557121 is 1217551075002.

2005701557121 is a `hidden beast` number, since 2 + 0 + 0 + 5 + 70 + 15 + 571 + 2 + 1 = 666.

It is not a de Polignac number, because 2005701557121 - 2² = 2005701557117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005701557191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12570040 + ... + 12728601.

It is an arithmetic number, because the mean of its divisors is an integer number (126290820864).

Almost surely, 2^{2005701557121} is an apocalyptic number.

It is an amenable number.

2005701557121 is a deficient number, since it is larger than the sum of its proper divisors (1025278143615).

2005701557121 is a wasteful number, since it uses less digits than its factorization.

2005701557121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25299053 (or 25299050 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 36.

The spelling of 2005701557121 in words is "two trillion, five billion, seven hundred one million, five hundred fifty-seven thousand, one hundred twenty-one".