20306545542 has 48 divisors (see below), whose sum is σ = 45018118080. Its totient is φ = 6613243056.

The previous prime is 20306545541. The next prime is 20306545549. The reversal of 20306545542 is 24554560302.

20306545542 is a `hidden beast` number, since 20 + 30 + 6 + 54 + 554 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20306545497 and 20306545506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306545541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114453 + ... + 231759.

It is an arithmetic number, because the mean of its divisors is an integer number (937877460).

Almost surely, 2^20306545542 is an apocalyptic number.

20306545542 is an abundant number, since it is smaller than the sum of its proper divisors (24711572538).

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

20306545542 is a wasteful number, since it uses less digits than its factorization.

20306545542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117537 (or 117534 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 20306545542 in words is "twenty billion, three hundred six million, five hundred forty-five thousand, five hundred forty-two".