2615646925949 has 2 divisors, whose sum is σ = 2615646925950. Its totient is φ = 2615646925948.

The previous prime is 2615646925847. The next prime is 2615646925951. The reversal of 2615646925949 is 9495296465162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2260482180100 + 355164745849 = 1503490^2 + 595957^2 .

It is a cyclic number.

It is not a de Polignac number, because 2615646925949 - 2²⁰ = 2615645877373 is a prime.

Together with 2615646925951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2615646925999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307823462974 + 1307823462975.

It is an arithmetic number, because the mean of its divisors is an integer number (1307823462975).

Almost surely, 2^{2615646925949} is an apocalyptic number.

It is an amenable number.

2615646925949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2615646925949 is an equidigital number, since it uses as much as digits as its factorization.

2615646925949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 251942400, while the sum is 68.

The spelling of 2615646925949 in words is "two trillion, six hundred fifteen billion, six hundred forty-six million, nine hundred twenty-five thousand, nine hundred forty-nine".