77090979243 has 8 divisors (see below), whose sum is σ = 102807658048. Its totient is φ = 51384143304.

The previous prime is 77090979209. The next prime is 77090979263. The reversal of 77090979243 is 34297909077.

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

It is not a de Polignac number, because 77090979243 - 2¹⁷ = 77090848171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77090979263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2442421 + ... + 2473782.

It is an arithmetic number, because the mean of its divisors is an integer number (12850957256).

Almost surely, 2^77090979243 is an apocalyptic number.

77090979243 is a deficient number, since it is larger than the sum of its proper divisors (25716678805).

77090979243 is a wasteful number, since it uses less digits than its factorization.

77090979243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921433.

The product of its (nonzero) digits is 6001128, while the sum is 57.

The spelling of 77090979243 in words is "seventy-seven billion, ninety million, nine hundred seventy-nine thousand, two hundred forty-three".