77550051983 has 4 divisors (see below), whose sum is σ = 79353541608. Its totient is φ = 75746562360.

The previous prime is 77550051973. The next prime is 77550051989. The reversal of 77550051983 is 38915005577.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77550051983 - 2⁶ = 77550051919 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 (77550051989) 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 3 ways as a sum of consecutive naturals, for example, 901744748 + ... + 901744833.

It is an arithmetic number, because the mean of its divisors is an integer number (19838385402).

Almost surely, 2^77550051983 is an apocalyptic number.

77550051983 is a deficient number, since it is larger than the sum of its proper divisors (1803489625).

77550051983 is a wasteful number, since it uses less digits than its factorization.

77550051983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803489624.

The product of its (nonzero) digits is 1323000, while the sum is 50.

The spelling of 77550051983 in words is "seventy-seven billion, five hundred fifty million, fifty-one thousand, nine hundred eighty-three".