61264413250477 has 2 divisors, whose sum is σ = 61264413250478. Its totient is φ = 61264413250476.

The previous prime is 61264413250457. The next prime is 61264413250501. The reversal of 61264413250477 is 77405231446216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34665494083081 + 26598919167396 = 5887741^2 + 5157414^2 .

It is a cyclic number.

It is not a de Polignac number, because 61264413250477 - 2⁷ = 61264413250349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61264413250457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30632206625238 + 30632206625239.

It is an arithmetic number, because the mean of its divisors is an integer number (30632206625239).

Almost surely, 2^{61264413250477} is an apocalyptic number.

It is an amenable number.

61264413250477 is a deficient number, since it is larger than the sum of its proper divisors (1).

61264413250477 is an equidigital number, since it uses as much as digits as its factorization.

61264413250477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 61264413250477 in words is "sixty-one trillion, two hundred sixty-four billion, four hundred thirteen million, two hundred fifty thousand, four hundred seventy-seven".