20720250754 has 32 divisors (see below), whose sum is σ = 35703360000. Its totient is φ = 8834495040.

The previous prime is 20720250751. The next prime is 20720250757. The reversal of 20720250754 is 45705202702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20720250751) and next prime (20720250757).

It is not an unprimeable number, because it can be changed into a prime (20720250751) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2247847 + ... + 2257045.

It is an arithmetic number, because the mean of its divisors is an integer number (1115730000).

Almost surely, 2^20720250754 is an apocalyptic number.

20720250754 is a deficient number, since it is larger than the sum of its proper divisors (14983109246).

20720250754 is a wasteful number, since it uses less digits than its factorization.

20720250754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10018.

The product of its (nonzero) digits is 39200, while the sum is 34.

The spelling of 20720250754 in words is "twenty billion, seven hundred twenty million, two hundred fifty thousand, seven hundred fifty-four".