61776337463 has 2 divisors, whose sum is σ = 61776337464. Its totient is φ = 61776337462.

The previous prime is 61776337433. The next prime is 61776337489. The reversal of 61776337463 is 36473367716.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61776337463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61776337433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30888168731 + 30888168732.

It is an arithmetic number, because the mean of its divisors is an integer number (30888168732).

Almost surely, 2^61776337463 is an apocalyptic number.

61776337463 is a deficient number, since it is larger than the sum of its proper divisors (1).

61776337463 is an equidigital number, since it uses as much as digits as its factorization.

61776337463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8001504, while the sum is 53.

The spelling of 61776337463 in words is "sixty-one billion, seven hundred seventy-six million, three hundred thirty-seven thousand, four hundred sixty-three".