20387573802 has 40 divisors (see below), whose sum is σ = 46655269056. Its totient is φ = 6651262728.

The previous prime is 20387573771. The next prime is 20387573813. The reversal of 20387573802 is 20837578302.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1331208 + ... + 1346435.

Almost surely, 2^20387573802 is an apocalyptic number.

20387573802 is an abundant number, since it is smaller than the sum of its proper divisors (26267695254).

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

20387573802 is a wasteful number, since it uses less digits than its factorization.

20387573802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677704 (or 2677695 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 20387573802 in words is "twenty billion, three hundred eighty-seven million, five hundred seventy-three thousand, eight hundred two".