55700781528 has 32 divisors (see below), whose sum is σ = 159145090560. Its totient is φ = 15914508960.

The previous prime is 55700781523. The next prime is 55700781529. The reversal of 55700781528 is 82518700755.

55700781528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55700781523) 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, 165775968 + ... + 165776303.

It is an arithmetic number, because the mean of its divisors is an integer number (4973284080).

Almost surely, 2^55700781528 is an apocalyptic number.

It is an amenable number.

55700781528 is an abundant number, since it is smaller than the sum of its proper divisors (103444309032).

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

55700781528 is a wasteful number, since it uses less digits than its factorization.

55700781528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331552287 (or 331552283 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 48.

The spelling of 55700781528 in words is "fifty-five billion, seven hundred million, seven hundred eighty-one thousand, five hundred twenty-eight".