20352642566435 has 16 divisors (see below), whose sum is σ = 24939406677600. Its totient is φ = 15939325409280.

The previous prime is 20352642566429. The next prime is 20352642566467. The reversal of 20352642566435 is 53466524625302.

It is a de Polignac number, because none of the positive numbers 2^k-20352642566435 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

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, 85407101 + ... + 85645070.

It is an arithmetic number, because the mean of its divisors is an integer number (1558712917350).

Almost surely, 2^{20352642566435} is an apocalyptic number.

20352642566435 is a deficient number, since it is larger than the sum of its proper divisors (4586764111165).

20352642566435 is a wasteful number, since it uses less digits than its factorization.

20352642566435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171052678.

The product of its (nonzero) digits is 31104000, while the sum is 53.

The spelling of 20352642566435 in words is "twenty trillion, three hundred fifty-two billion, six hundred forty-two million, five hundred sixty-six thousand, four hundred thirty-five".