7138121748623 has 2 divisors, whose sum is σ = 7138121748624. Its totient is φ = 7138121748622.

The previous prime is 7138121748481. The next prime is 7138121748649. The reversal of 7138121748623 is 3268471218317.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7138121748623 - 2³² = 7133826781327 is a prime.

It is a super-2 number, since 2×7138121748623² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138121748323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569060874311 + 3569060874312.

It is an arithmetic number, because the mean of its divisors is an integer number (3569060874312).

Almost surely, 2^{7138121748623} is an apocalyptic number.

7138121748623 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138121748623 is an equidigital number, since it uses as much as digits as its factorization.

7138121748623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 53.

The spelling of 7138121748623 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-one million, seven hundred forty-eight thousand, six hundred twenty-three".