20073217492 has 6 divisors (see below), whose sum is σ = 35128130618. Its totient is φ = 10036608744.

The previous prime is 20073217481. The next prime is 20073217513. The reversal of 20073217492 is 29471237002.

It can be written as a sum of positive squares in only one way, i.e., 16208854596 + 3864362896 = 127314^2 + 62164^2 .

It is a super-2 number, since 2×20073217492² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2509152183 + ... + 2509152190.

Almost surely, 2^20073217492 is an apocalyptic number.

It is an amenable number.

20073217492 is a deficient number, since it is larger than the sum of its proper divisors (15054913126).

20073217492 is a wasteful number, since it uses less digits than its factorization.

20073217492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018304377 (or 5018304375 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 20073217492 in words is "twenty billion, seventy-three million, two hundred seventeen thousand, four hundred ninety-two".