67777790740 has 24 divisors (see below), whose sum is σ = 155272757472. Its totient is φ = 24646469280.

The previous prime is 67777790723. The next prime is 67777790777. The reversal of 67777790740 is 4709777776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154040214 + ... + 154040653.

It is an arithmetic number, because the mean of its divisors is an integer number (6469698228).

Almost surely, 2^67777790740 is an apocalyptic number.

It is an amenable number.

67777790740 is an abundant number, since it is smaller than the sum of its proper divisors (87494966732).

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

67777790740 is a wasteful number, since it uses less digits than its factorization.

67777790740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308080887 (or 308080885 counting only the distinct ones).

The product of its (nonzero) digits is 25412184, while the sum is 61.

The spelling of 67777790740 in words is "sixty-seven billion, seven hundred seventy-seven million, seven hundred ninety thousand, seven hundred forty".