20387533794 has 8 divisors (see below), whose sum is σ = 40775067600. Its totient is φ = 6795844596.

The previous prime is 20387533741. The next prime is 20387533807. The reversal of 20387533794 is 49733578302.

It is a sphenic number, since it is the product of 3 distinct primes.

20387533794 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698961144 + ... + 1698961155.

It is an arithmetic number, because the mean of its divisors is an integer number (5096883450).

Almost surely, 2^20387533794 is an apocalyptic number.

20387533794 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20387533794 is a wasteful number, since it uses less digits than its factorization.

20387533794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397922304.

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 20387533794 in words is "twenty billion, three hundred eighty-seven million, five hundred thirty-three thousand, seven hundred ninety-four".