20255329837440 has 96 divisors (see below), whose sum is σ = 69944185864800. Its totient is φ = 5401421288448.

The previous prime is 20255329837423. The next prime is 20255329837451. The reversal of 20255329837440 is 4473892355202.

20255329837440 is a `hidden beast` number, since 2 + 0 + 2 + 55 + 32 + 98 + 37 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1758269400 + ... + 1758280919.

It is an arithmetic number, because the mean of its divisors is an integer number (728585269425).

Almost surely, 2^{20255329837440} is an apocalyptic number.

20255329837440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20255329837440 is an abundant number, since it is smaller than the sum of its proper divisors (49688856027360).

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

20255329837440 is a wasteful number, since it uses less digits than its factorization.

20255329837440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516550344 (or 3516550329 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

The spelling of 20255329837440 in words is "twenty trillion, two hundred fifty-five billion, three hundred twenty-nine million, eight hundred thirty-seven thousand, four hundred forty".