77734141729 has 4 divisors (see below), whose sum is σ = 80241694720. Its totient is φ = 75226588740.

The previous prime is 77734141711. The next prime is 77734141759. The reversal of 77734141729 is 92714143777.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77734141729 - 2¹³ = 77734133537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77734141759) 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, 1253776449 + ... + 1253776510.

It is an arithmetic number, because the mean of its divisors is an integer number (20060423680).

Almost surely, 2^77734141729 is an apocalyptic number.

It is an amenable number.

77734141729 is a deficient number, since it is larger than the sum of its proper divisors (2507552991).

77734141729 is a wasteful number, since it uses less digits than its factorization.

77734141729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507552990.

The product of its digits is 2074464, while the sum is 52.

The spelling of 77734141729 in words is "seventy-seven billion, seven hundred thirty-four million, one hundred forty-one thousand, seven hundred twenty-nine".