77734212548147 has 4 divisors (see below), whose sum is σ = 77734331234976. Its totient is φ = 77734093861320.

The previous prime is 77734212548117. The next prime is 77734212548171. The reversal of 77734212548147 is 74184521243777.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77734212548147 - 2⁴⁴ = 60142026503731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77734212548147.

It is not an unprimeable number, because it can be changed into a prime (77734212548107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58355504 + ... + 59672717.

It is an arithmetic number, because the mean of its divisors is an integer number (19433582808744).

Almost surely, 2^{77734212548147} is an apocalyptic number.

77734212548147 is a deficient number, since it is larger than the sum of its proper divisors (118686829).

77734212548147 is a wasteful number, since it uses less digits than its factorization.

77734212548147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118686828.

The product of its digits is 73758720, while the sum is 62.

The spelling of 77734212548147 in words is "seventy-seven trillion, seven hundred thirty-four billion, two hundred twelve million, five hundred forty-eight thousand, one hundred forty-seven".