77240486815 has 8 divisors (see below), whose sum is σ = 92706314400. Its totient is φ = 61780569312.

The previous prime is 77240486783. The next prime is 77240486819. The reversal of 77240486815 is 51868404277.

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 77240486815 - 2⁵ = 77240486783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77240486819) 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, 1448715 + ... + 1501084.

It is an arithmetic number, because the mean of its divisors is an integer number (11588289300).

Almost surely, 2^77240486815 is an apocalyptic number.

77240486815 is a deficient number, since it is larger than the sum of its proper divisors (15465827585).

77240486815 is a wasteful number, since it uses less digits than its factorization.

77240486815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955041.

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 77240486815 in words is "seventy-seven billion, two hundred forty million, four hundred eighty-six thousand, eight hundred fifteen".