61543354763 has 16 divisors (see below), whose sum is σ = 73538811360. Its totient is φ = 50841638400.

The previous prime is 61543354757. The next prime is 61543354777. The reversal of 61543354763 is 36745334516.

It is a cyclic number.

It is not a de Polignac number, because 61543354763 - 2⁶ = 61543354699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61543354793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5668868 + ... + 5679713.

It is an arithmetic number, because the mean of its divisors is an integer number (4596175710).

Almost surely, 2^61543354763 is an apocalyptic number.

61543354763 is a deficient number, since it is larger than the sum of its proper divisors (11995456597).

61543354763 is a wasteful number, since it uses less digits than its factorization.

61543354763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11348638.

The product of its digits is 2721600, while the sum is 47.

The spelling of 61543354763 in words is "sixty-one billion, five hundred forty-three million, three hundred fifty-four thousand, seven hundred sixty-three".