977783402543 has 4 divisors (see below), whose sum is σ = 978395666760. Its totient is φ = 977171138328.

The previous prime is 977783402513. The next prime is 977783402581. The reversal of 977783402543 is 345204387779.

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 977783402543 - 2³⁶ = 909063925807 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 (977783402513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306129713 + ... + 306132906.

It is an arithmetic number, because the mean of its divisors is an integer number (244598916690).

Almost surely, 2^977783402543 is an apocalyptic number.

977783402543 is a deficient number, since it is larger than the sum of its proper divisors (612264217).

977783402543 is a wasteful number, since it uses less digits than its factorization.

977783402543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612264216.

The product of its (nonzero) digits is 35562240, while the sum is 59.

The spelling of 977783402543 in words is "nine hundred seventy-seven billion, seven hundred eighty-three million, four hundred two thousand, five hundred forty-three".