20477877502 has 16 divisors (see below), whose sum is σ = 30774444480. Its totient is φ = 10219749408.

The previous prime is 20477877499. The next prime is 20477877509. The reversal of 20477877502 is 20577877402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20477877509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2649748 + ... + 2657464.

It is an arithmetic number, because the mean of its divisors is an integer number (1923402780).

Almost surely, 2^20477877502 is an apocalyptic number.

20477877502 is a deficient number, since it is larger than the sum of its proper divisors (10296566978).

20477877502 is a wasteful number, since it uses less digits than its factorization.

20477877502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035.

The product of its (nonzero) digits is 1536640, while the sum is 49.

The spelling of 20477877502 in words is "twenty billion, four hundred seventy-seven million, eight hundred seventy-seven thousand, five hundred two".