77466415380 has 24 divisors (see below), whose sum is σ = 216905963232. Its totient is φ = 20657710752.

The previous prime is 77466415357. The next prime is 77466415393. The reversal of 77466415380 is 8351466477.

It is a happy number.

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, 645553402 + ... + 645553521.

It is an arithmetic number, because the mean of its divisors is an integer number (9037748468).

Almost surely, 2^77466415380 is an apocalyptic number.

It is an amenable number.

77466415380 is an abundant number, since it is smaller than the sum of its proper divisors (139439547852).

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

77466415380 is a wasteful number, since it uses less digits than its factorization.

77466415380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291106935 (or 1291106933 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 77466415380 in words is "seventy-seven billion, four hundred sixty-six million, four hundred fifteen thousand, three hundred eighty".