20146635073477 has 8 divisors (see below), whose sum is σ = 21979141699680. Its totient is φ = 18314294171760.

The previous prime is 20146635073471. The next prime is 20146635073519. The reversal of 20146635073477 is 77437053664102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20146635073477 - 2³ = 20146635073469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146635073471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41176863 + ... + 41663260.

It is an arithmetic number, because the mean of its divisors is an integer number (2747392712460).

Almost surely, 2^{20146635073477} is an apocalyptic number.

It is an amenable number.

20146635073477 is a deficient number, since it is larger than the sum of its proper divisors (1832506626203).

20146635073477 is a wasteful number, since it uses less digits than its factorization.

20146635073477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82862243.

The product of its (nonzero) digits is 17781120, while the sum is 55.

The spelling of 20146635073477 in words is "twenty trillion, one hundred forty-six billion, six hundred thirty-five million, seventy-three thousand, four hundred seventy-seven".