20537021774 has 8 divisors (see below), whose sum is σ = 30811710000. Its totient is φ = 10266451776.

The previous prime is 20537021767. The next prime is 20537021803. The reversal of 20537021774 is 47712073502.

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

It is a congruent 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, 1017059 + ... + 1037054.

It is an arithmetic number, because the mean of its divisors is an integer number (3851463750).

Almost surely, 2^20537021774 is an apocalyptic number.

20537021774 is a deficient number, since it is larger than the sum of its proper divisors (10274688226).

20537021774 is a wasteful number, since it uses less digits than its factorization.

20537021774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059114.

The product of its (nonzero) digits is 82320, while the sum is 38.

The spelling of 20537021774 in words is "twenty billion, five hundred thirty-seven million, twenty-one thousand, seven hundred seventy-four".