2542051111361 has 4 divisors (see below), whose sum is σ = 2565372681300. Its totient is φ = 2518729541424.

The previous prime is 2542051111357. The next prime is 2542051111381. The reversal of 2542051111361 is 1631111502452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 588835230736 + 1953215880625 = 767356^2 + 1397575^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542051111361 - 2² = 2542051111357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542051111381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11660784806 + ... + 11660785023.

It is an arithmetic number, because the mean of its divisors is an integer number (641343170325).

Almost surely, 2^{2542051111361} is an apocalyptic number.

It is an amenable number.

2542051111361 is a deficient number, since it is larger than the sum of its proper divisors (23321569939).

2542051111361 is a wasteful number, since it uses less digits than its factorization.

2542051111361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23321569938.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 2542051111361 in words is "two trillion, five hundred forty-two billion, fifty-one million, one hundred eleven thousand, three hundred sixty-one".