77673434160 has 80 divisors (see below), whose sum is σ = 275185886976. Its totient is φ = 17753927424.

The previous prime is 77673434147. The next prime is 77673434183. The reversal of 77673434160 is 6143437677.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23115414 + ... + 23118773.

Almost surely, 2^77673434160 is an apocalyptic number.

77673434160 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77673434160 is an abundant number, since it is smaller than the sum of its proper divisors (197512452816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77673434160 is a wasteful number, since it uses less digits than its factorization.

77673434160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46234210 (or 46234204 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 77673434160 in words is "seventy-seven billion, six hundred seventy-three million, four hundred thirty-four thousand, one hundred sixty".