20753523777755 has 64 divisors (see below), whose sum is σ = 26800941847680. Its totient is φ = 15379501363200.

The previous prime is 20753523777751. The next prime is 20753523777757. The reversal of 20753523777755 is 55777732535702.

It is not a de Polignac number, because 20753523777755 - 2² = 20753523777751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20753523777691 and 20753523777700.

It is not an unprimeable number, because it can be changed into a prime (20753523777751) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3232129445 + ... + 3232135865.

It is an arithmetic number, because the mean of its divisors is an integer number (418764716370).

Almost surely, 2^{20753523777755} is an apocalyptic number.

20753523777755 is a deficient number, since it is larger than the sum of its proper divisors (6047418069925).

20753523777755 is a wasteful number, since it uses less digits than its factorization.

20753523777755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8592.

The product of its (nonzero) digits is 378157500, while the sum is 65.

The spelling of 20753523777755 in words is "twenty trillion, seven hundred fifty-three billion, five hundred twenty-three million, seven hundred seventy-seven thousand, seven hundred fifty-five".