77406740440 has 32 divisors (see below), whose sum is σ = 174721632480. Its totient is φ = 30863768832.

The previous prime is 77406740423. The next prime is 77406740447. The reversal of 77406740440 is 4404760477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77406740447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3078804 + ... + 3103843.

It is an arithmetic number, because the mean of its divisors is an integer number (5460051015).

Almost surely, 2^77406740440 is an apocalyptic number.

It is an amenable number.

77406740440 is an abundant number, since it is smaller than the sum of its proper divisors (97314892040).

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

77406740440 is a wasteful number, since it uses less digits than its factorization.

77406740440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182971 (or 6182967 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 43.

The spelling of 77406740440 in words is "seventy-seven billion, four hundred six million, seven hundred forty thousand, four hundred forty".