77000334420 has 48 divisors (see below), whose sum is σ = 226948357440. Its totient is φ = 19452715776.

The previous prime is 77000334413. The next prime is 77000334461. The reversal of 77000334420 is 2443300077.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 33770937 + ... + 33773216.

It is an arithmetic number, because the mean of its divisors is an integer number (4728090780).

Almost surely, 2^77000334420 is an apocalyptic number.

It is an amenable number.

77000334420 is an abundant number, since it is smaller than the sum of its proper divisors (149948023020).

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

77000334420 is a wasteful number, since it uses less digits than its factorization.

77000334420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67544184 (or 67544182 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 30.

Adding to 77000334420 its reverse (2443300077), we get a palindrome (79443634497).

The spelling of 77000334420 in words is "seventy-seven billion, three hundred thirty-four thousand, four hundred twenty".