20697353962 has 4 divisors (see below), whose sum is σ = 31046030946. Its totient is φ = 10348676980.

The previous prime is 20697353933. The next prime is 20697353983. The reversal of 20697353962 is 26935379602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16422678801 + 4274675161 = 128151^2 + 65381^2 .

It is a super-2 number, since 2×20697353962² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5174338489 + ... + 5174338492.

Almost surely, 2^20697353962 is an apocalyptic number.

20697353962 is a deficient number, since it is larger than the sum of its proper divisors (10348676984).

20697353962 is a wasteful number, since it uses less digits than its factorization.

20697353962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348676983.

The product of its (nonzero) digits is 3674160, while the sum is 52.

The spelling of 20697353962 in words is "twenty billion, six hundred ninety-seven million, three hundred fifty-three thousand, nine hundred sixty-two".