20754501802 has 4 divisors (see below), whose sum is σ = 31131752706. Its totient is φ = 10377250900.

The previous prime is 20754501791. The next prime is 20754501809. The reversal of 20754501802 is 20810545702.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18109354041 + 2645147761 = 134571^2 + 51431^2 .

It is not an unprimeable number, because it can be changed into a prime (20754501809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5188625449 + ... + 5188625452.

Almost surely, 2^20754501802 is an apocalyptic number.

20754501802 is a deficient number, since it is larger than the sum of its proper divisors (10377250904).

20754501802 is a wasteful number, since it uses less digits than its factorization.

20754501802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10377250903.

The product of its (nonzero) digits is 22400, while the sum is 34.

The spelling of 20754501802 in words is "twenty billion, seven hundred fifty-four million, five hundred one thousand, eight hundred two".