20769617914 has 4 divisors (see below), whose sum is σ = 31154426874. Its totient is φ = 10384808956.

The previous prime is 20769617887. The next prime is 20769617923. The reversal of 20769617914 is 41971696702.

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., 18270117889 + 2499500025 = 135167^2 + 49995^2 .

It is a super-2 number, since 2×20769617914² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5192404477 + ... + 5192404480.

Almost surely, 2^20769617914 is an apocalyptic number.

20769617914 is a deficient number, since it is larger than the sum of its proper divisors (10384808960).

20769617914 is a wasteful number, since it uses less digits than its factorization.

20769617914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384808959.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 20769617914 in words is "twenty billion, seven hundred sixty-nine million, six hundred seventeen thousand, nine hundred fourteen".