77332443540 has 192 divisors, whose sum is σ = 239954400000. Its totient is φ = 18452459520.

The previous prime is 77332443527. The next prime is 77332443563. The reversal of 77332443540 is 4534423377.

It is a junction number, because it is equal to n+sod(n) for n = 77332443492 and 77332443501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13448586 + ... + 13454334.

It is an arithmetic number, because the mean of its divisors is an integer number (1249762500).

Almost surely, 2^77332443540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77332443540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119977200000).

77332443540 is an abundant number, since it is smaller than the sum of its proper divisors (162621956460).

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

77332443540 is a wasteful number, since it uses less digits than its factorization.

77332443540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090 (or 6088 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 42.

The spelling of 77332443540 in words is "seventy-seven billion, three hundred thirty-two million, four hundred forty-three thousand, five hundred forty".