20120137378279 has 2 divisors, whose sum is σ = 20120137378280. Its totient is φ = 20120137378278.

The previous prime is 20120137378277. The next prime is 20120137378361. The reversal of 20120137378279 is 97287373102102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20120137378279 - 2¹ = 20120137378277 is a prime.

Together with 20120137378277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120137378277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060068689139 + 10060068689140.

It is an arithmetic number, because the mean of its divisors is an integer number (10060068689140).

Almost surely, 2^{20120137378279} is an apocalyptic number.

20120137378279 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120137378279 is an equidigital number, since it uses as much as digits as its factorization.

20120137378279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 20120137378279 in words is "twenty trillion, one hundred twenty billion, one hundred thirty-seven million, three hundred seventy-eight thousand, two hundred seventy-nine".