20742068754 has 48 divisors (see below), whose sum is σ = 49830453504. Its totient is φ = 6182431200.

The previous prime is 20742068749. The next prime is 20742068759. The reversal of 20742068754 is 45786024702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20742068749) and next prime (20742068759).

It is a super-2 number, since 2×20742068754² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20742068759) 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, 846594 + ... + 870749.

It is an arithmetic number, because the mean of its divisors is an integer number (1038134448).

Almost surely, 2^20742068754 is an apocalyptic number.

20742068754 is an abundant number, since it is smaller than the sum of its proper divisors (29088384750).

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

20742068754 is a wasteful number, since it uses less digits than its factorization.

20742068754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717423 (or 1717420 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 20742068754 in words is "twenty billion, seven hundred forty-two million, sixty-eight thousand, seven hundred fifty-four".