2538607965766 has 4 divisors (see below), whose sum is σ = 3807911948652. Its totient is φ = 1269303982882.

The previous prime is 2538607965743. The next prime is 2538607965767. The reversal of 2538607965766 is 6675697068352.

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

It is a junction number, because it is equal to n+sod(n) for n = 2538607965695 and 2538607965704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538607965767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634651991440 + ... + 634651991443.

It is an arithmetic number, because the mean of its divisors is an integer number (951977987163).

Almost surely, 2^{2538607965766} is an apocalyptic number.

2538607965766 is a deficient number, since it is larger than the sum of its proper divisors (1269303982886).

2538607965766 is a wasteful number, since it uses less digits than its factorization.

2538607965766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269303982885.

The product of its (nonzero) digits is 685843200, while the sum is 70.

The spelling of 2538607965766 in words is "two trillion, five hundred thirty-eight billion, six hundred seven million, nine hundred sixty-five thousand, seven hundred sixty-six".