55273540237520 has 80 divisors (see below), whose sum is σ = 140284073869632. Its totient is φ = 20086526330880.

The previous prime is 55273540237493. The next prime is 55273540237541. The reversal of 55273540237520 is 2573204537255.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent 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, 18855782 + ... + 21589061.

Almost surely, 2^{55273540237520} is an apocalyptic number.

It is an amenable number.

55273540237520 is an abundant number, since it is smaller than the sum of its proper divisors (85010533632112).

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

55273540237520 is a wasteful number, since it uses less digits than its factorization.

55273540237520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40446420 (or 40446414 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 50.

The spelling of 55273540237520 in words is "fifty-five trillion, two hundred seventy-three billion, five hundred forty million, two hundred thirty-seven thousand, five hundred twenty".