20387823880070 has 64 divisors (see below), whose sum is σ = 38074687580160. Its totient is φ = 7855465446528.

The previous prime is 20387823880057. The next prime is 20387823880103. The reversal of 20387823880070 is 7008832878302.

It is a junction number, because it is equal to n+sod(n) for n = 20387823879988 and 20387823880015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9266036 + ... + 11253224.

It is an arithmetic number, because the mean of its divisors is an integer number (594916993440).

Almost surely, 2^{20387823880070} is an apocalyptic number.

20387823880070 is a deficient number, since it is larger than the sum of its proper divisors (17686863700090).

20387823880070 is a wasteful number, since it uses less digits than its factorization.

20387823880070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987589.

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 20387823880070 in words is "twenty trillion, three hundred eighty-seven billion, eight hundred twenty-three million, eight hundred eighty thousand, seventy".