77631550340 has 48 divisors (see below), whose sum is σ = 164112661440. Its totient is φ = 30845888640.

The previous prime is 77631550231. The next prime is 77631550357. The reversal of 77631550340 is 4305513677.

It is a happy 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, 7620050 + ... + 7630230.

It is an arithmetic number, because the mean of its divisors is an integer number (3419013780).

Almost surely, 2^77631550340 is an apocalyptic number.

It is an amenable number.

77631550340 is an abundant number, since it is smaller than the sum of its proper divisors (86481111100).

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

77631550340 is a wasteful number, since it uses less digits than its factorization.

77631550340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12692 (or 12690 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 77631550340 in words is "seventy-seven billion, six hundred thirty-one million, five hundred fifty thousand, three hundred forty".