77291616134 has 4 divisors (see below), whose sum is σ = 115937424204. Its totient is φ = 38645808066.

The previous prime is 77291616131. The next prime is 77291616229. The reversal of 77291616134 is 43161619277.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77291616131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19322904032 + ... + 19322904035.

It is an arithmetic number, because the mean of its divisors is an integer number (28984356051).

Almost surely, 2^77291616134 is an apocalyptic number.

77291616134 is a deficient number, since it is larger than the sum of its proper divisors (38645808070).

77291616134 is a wasteful number, since it uses less digits than its factorization.

77291616134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38645808069.

The product of its digits is 381024, while the sum is 47.

The spelling of 77291616134 in words is "seventy-seven billion, two hundred ninety-one million, six hundred sixteen thousand, one hundred thirty-four".