20526520607655 has 32 divisors (see below), whose sum is σ = 33143819258880. Its totient is φ = 10847271527040.

The previous prime is 20526520607647. The next prime is 20526520607693. The reversal of 20526520607655 is 55670602562502.

It is not a de Polignac number, because 20526520607655 - 2³ = 20526520607647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20526520607598 and 20526520607607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6715375 + ... + 9281664.

It is an arithmetic number, because the mean of its divisors is an integer number (1035744351840).

Almost surely, 2^{20526520607655} is an apocalyptic number.

20526520607655 is a deficient number, since it is larger than the sum of its proper divisors (12617298651225).

20526520607655 is a wasteful number, since it uses less digits than its factorization.

20526520607655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15997831.

The product of its (nonzero) digits is 7560000, while the sum is 51.

The spelling of 20526520607655 in words is "twenty trillion, five hundred twenty-six billion, five hundred twenty million, six hundred seven thousand, six hundred fifty-five".