73777633521434 has 8 divisors (see below), whose sum is σ = 111149709891060. Its totient is φ = 36727730224416.

The previous prime is 73777633521391. The next prime is 73777633521439. The reversal of 73777633521434 is 43412533677737.

It can be written as a sum of positive squares in 2 ways, for example, as 46866387885409 + 26911245636025 = 6845903^2 + 5187605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (73777633521439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80543267579 + ... + 80543268494.

Almost surely, 2^{73777633521434} is an apocalyptic number.

73777633521434 is a deficient number, since it is larger than the sum of its proper divisors (37372076369626).

73777633521434 is a wasteful number, since it uses less digits than its factorization.

73777633521434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161086536304.

The product of its digits is 186701760, while the sum is 62.

The spelling of 73777633521434 in words is "seventy-three trillion, seven hundred seventy-seven billion, six hundred thirty-three million, five hundred twenty-one thousand, four hundred thirty-four".