77242942086 has 8 divisors (see below), whose sum is σ = 154485884184. Its totient is φ = 25747647360.

The previous prime is 77242942061. The next prime is 77242942097. The reversal of 77242942086 is 68024924277.

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

77242942086 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6436911835 + ... + 6436911846.

It is an arithmetic number, because the mean of its divisors is an integer number (19310735523).

Almost surely, 2^77242942086 is an apocalyptic number.

77242942086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77242942086 is a wasteful number, since it uses less digits than its factorization.

77242942086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12873823686.

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 77242942086 in words is "seventy-seven billion, two hundred forty-two million, nine hundred forty-two thousand, eighty-six".