63461777671 has 16 divisors (see below), whose sum is σ = 64782594720. Its totient is φ = 62150584320.

The previous prime is 63461777651. The next prime is 63461777711. The reversal of 63461777671 is 17677716436.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63461777671 - 2⁷ = 63461777543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63461777651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17418376 + ... + 17422018.

It is an arithmetic number, because the mean of its divisors is an integer number (4048912170).

Almost surely, 2^63461777671 is an apocalyptic number.

63461777671 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

63461777671 is a deficient number, since it is larger than the sum of its proper divisors (1320817049).

63461777671 is a wasteful number, since it uses less digits than its factorization.

63461777671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866.

The product of its digits is 6223392, while the sum is 55.

The spelling of 63461777671 in words is "sixty-three billion, four hundred sixty-one million, seven hundred seventy-seven thousand, six hundred seventy-one".