20738437593885 has 128 divisors (see below), whose sum is σ = 40897239552000. Its totient is φ = 9885834604800.

The previous prime is 20738437593823. The next prime is 20738437593917. The reversal of 20738437593885 is 58839573483702.

20738437593885 is a `hidden beast` number, since 2 + 0 + 7 + 38 + 437 + 59 + 38 + 85 = 666.

It is not a de Polignac number, because 20738437593885 - 2²⁷ = 20738303376157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 211829376 + ... + 211927254.

It is an arithmetic number, because the mean of its divisors is an integer number (319509684000).

Almost surely, 2^{20738437593885} is an apocalyptic number.

It is an amenable number.

20738437593885 is a deficient number, since it is larger than the sum of its proper divisors (20158801958115).

20738437593885 is a wasteful number, since it uses less digits than its factorization.

20738437593885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100304 (or 100298 counting only the distinct ones).

The product of its (nonzero) digits is 1219276800, while the sum is 72.

The spelling of 20738437593885 in words is "twenty trillion, seven hundred thirty-eight billion, four hundred thirty-seven million, five hundred ninety-three thousand, eight hundred eighty-five".