20534245015120 has 40 divisors (see below), whose sum is σ = 47982029846400. Its totient is φ = 8172423135360.

The previous prime is 20534245015073. The next prime is 20534245015139. The reversal of 20534245015120 is 2151054243502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×20534245015120² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644903836 + ... + 644935675.

It is an arithmetic number, because the mean of its divisors is an integer number (1199550746160).

Almost surely, 2^{20534245015120} is an apocalyptic number.

20534245015120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20534245015120 is an abundant number, since it is smaller than the sum of its proper divisors (27447784831280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20534245015120 is a wasteful number, since it uses less digits than its factorization.

20534245015120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289839723 (or 1289839717 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 20534245015120 its reverse (2151054243502), we get a palindrome (22685299258622).

The spelling of 20534245015120 in words is "twenty trillion, five hundred thirty-four billion, two hundred forty-five million, fifteen thousand, one hundred twenty".