6121511161247 has 2 divisors, whose sum is σ = 6121511161248. Its totient is φ = 6121511161246.

The previous prime is 6121511161231. The next prime is 6121511161253. The reversal of 6121511161247 is 7421611151216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6121511161247 - 2⁴ = 6121511161231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6121511161247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6121511101247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060755580623 + 3060755580624.

It is an arithmetic number, because the mean of its divisors is an integer number (3060755580624).

Almost surely, 2^{6121511161247} is an apocalyptic number.

6121511161247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6121511161247 is an equidigital number, since it uses as much as digits as its factorization.

6121511161247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 38.

The spelling of 6121511161247 in words is "six trillion, one hundred twenty-one billion, five hundred eleven million, one hundred sixty-one thousand, two hundred forty-seven".