77900550823 has 2 divisors, whose sum is σ = 77900550824. Its totient is φ = 77900550822.

The previous prime is 77900550757. The next prime is 77900550851. The reversal of 77900550823 is 32805500977.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77900550823 - 2²¹ = 77898453671 is a prime.

It is a super-3 number, since 3×77900550823³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77900550853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38950275411 + 38950275412.

It is an arithmetic number, because the mean of its divisors is an integer number (38950275412).

Almost surely, 2^77900550823 is an apocalyptic number.

77900550823 is a deficient number, since it is larger than the sum of its proper divisors (1).

77900550823 is an equidigital number, since it uses as much as digits as its factorization.

77900550823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 77900550823 in words is "seventy-seven billion, nine hundred million, five hundred fifty thousand, eight hundred twenty-three".