275377016065520 has 20 divisors (see below), whose sum is σ = 640251562352520. Its totient is φ = 110150806426176.

The previous prime is 275377016065507. The next prime is 275377016065553. The reversal of 275377016065520 is 25560610773572.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1721106350330 + ... + 1721106350489.

It is an arithmetic number, because the mean of its divisors is an integer number (32012578117626).

Almost surely, 2^{275377016065520} is an apocalyptic number.

275377016065520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275377016065520 is an abundant number, since it is smaller than the sum of its proper divisors (364874546287000).

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

275377016065520 is a wasteful number, since it uses less digits than its factorization.

275377016065520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442212700832 (or 3442212700826 counting only the distinct ones).

The product of its (nonzero) digits is 18522000, while the sum is 56.

The spelling of 275377016065520 in words is "two hundred seventy-five trillion, three hundred seventy-seven billion, sixteen million, sixty-five thousand, five hundred twenty".