20754785542 has 16 divisors (see below), whose sum is σ = 31190322240. Its totient is φ = 10358028288.

The previous prime is 20754785509. The next prime is 20754785567. The reversal of 20754785542 is 24558745702.

It is a super-2 number, since 2×20754785542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4253208 + ... + 4258084.

It is an arithmetic number, because the mean of its divisors is an integer number (1949395140).

Almost surely, 2^20754785542 is an apocalyptic number.

20754785542 is a deficient number, since it is larger than the sum of its proper divisors (10435536698).

20754785542 is a wasteful number, since it uses less digits than its factorization.

20754785542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8415.

The product of its (nonzero) digits is 3136000, while the sum is 49.

The spelling of 20754785542 in words is "twenty billion, seven hundred fifty-four million, seven hundred eighty-five thousand, five hundred forty-two".