78242570204077 has 8 divisors (see below), whose sum is σ = 79172064256320. Its totient is φ = 77314195353120.

The previous prime is 78242570204023. The next prime is 78242570204111. The reversal of 78242570204077 is 77040207524287.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78242570204077 - 2⁷ = 78242570203949 is a prime.

It is a super-2 number, since 2×78242570204077² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78242570204677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279659673 + ... + 279939310.

It is an arithmetic number, because the mean of its divisors is an integer number (9896508032040).

Almost surely, 2^{78242570204077} is an apocalyptic number.

It is an amenable number.

78242570204077 is a deficient number, since it is larger than the sum of its proper divisors (929494052243).

78242570204077 is a wasteful number, since it uses less digits than its factorization.

78242570204077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559600643.

The product of its (nonzero) digits is 12293120, while the sum is 55.

The spelling of 78242570204077 in words is "seventy-eight trillion, two hundred forty-two billion, five hundred seventy million, two hundred four thousand, seventy-seven".