20542463612 has 48 divisors (see below), whose sum is σ = 39575692800. Its totient is φ = 9252447360.

The previous prime is 20542463611. The next prime is 20542463657. The reversal of 20542463612 is 21636424502.

It is a super-2 number, since 2×20542463612² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542463611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3477053 + ... + 3482955.

It is an arithmetic number, because the mean of its divisors is an integer number (824493600).

Almost surely, 2^20542463612 is an apocalyptic number.

20542463612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20542463612 is a deficient number, since it is larger than the sum of its proper divisors (19033229188).

20542463612 is a wasteful number, since it uses less digits than its factorization.

20542463612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626 (or 6624 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 20542463612 in words is "twenty billion, five hundred forty-two million, four hundred sixty-three thousand, six hundred twelve".