20315432534061 has 64 divisors (see below), whose sum is σ = 31680892919808. Its totient is φ = 11340485388288.

The previous prime is 20315432534057. The next prime is 20315432534099. The reversal of 20315432534061 is 16043523451302.

It is not a de Polignac number, because 20315432534061 - 2² = 20315432534057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315432534161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 250621840 + ... + 250702886.

It is an arithmetic number, because the mean of its divisors is an integer number (495013951872).

Almost surely, 2^{20315432534061} is an apocalyptic number.

20315432534061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20315432534061 is a deficient number, since it is larger than the sum of its proper divisors (11365460385747).

20315432534061 is a wasteful number, since it uses less digits than its factorization.

20315432534061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82690.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 20315432534061 its reverse (16043523451302), we get a palindrome (36358955985363).

The spelling of 20315432534061 in words is "twenty trillion, three hundred fifteen billion, four hundred thirty-two million, five hundred thirty-four thousand, sixty-one".