2138421962567 has 12 divisors (see below), whose sum is σ = 2371693954968. Its totient is φ = 1912150749600.

The previous prime is 2138421962557. The next prime is 2138421962629. The reversal of 2138421962567 is 7652691248312.

It is not a de Polignac number, because 2138421962567 - 2²⁴ = 2138405185351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138421962507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26081348 + ... + 26163209.

It is an arithmetic number, because the mean of its divisors is an integer number (197641162914).

Almost surely, 2^{2138421962567} is an apocalyptic number.

2138421962567 is a deficient number, since it is larger than the sum of its proper divisors (233271992401).

2138421962567 is an equidigital number, since it uses as much as digits as its factorization.

2138421962567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52244690 (or 52244629 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 2138421962567 in words is "two trillion, one hundred thirty-eight billion, four hundred twenty-one million, nine hundred sixty-two thousand, five hundred sixty-seven".