77054055270520 has 128 divisors (see below), whose sum is σ = 178236375609600. Its totient is φ = 29962244300800.

The previous prime is 77054055270389. The next prime is 77054055270541. The reversal of 77054055270520 is 2507255045077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1268996721 + ... + 1269057439.

It is an arithmetic number, because the mean of its divisors is an integer number (1392471684450).

Almost surely, 2^{77054055270520} 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 77054055270520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89118187804800).

77054055270520 is an abundant number, since it is smaller than the sum of its proper divisors (101182320339080).

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

77054055270520 is a wasteful number, since it uses less digits than its factorization.

77054055270520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63529 (or 63525 counting only the distinct ones).

The product of its (nonzero) digits is 3430000, while the sum is 49.

The spelling of 77054055270520 in words is "seventy-seven trillion, fifty-four billion, fifty-five million, two hundred seventy thousand, five hundred twenty".