20279264137 has 8 divisors (see below), whose sum is σ = 22123874880. Its totient is φ = 18434826960.

The previous prime is 20279264111. The next prime is 20279264153. The reversal of 20279264137 is 73146297202.

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

It is not a de Polignac number, because 20279264137 - 2¹¹ = 20279262089 is a prime.

It is a super-2 number, since 2×20279264137² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20279264093 and 20279264102.

It is not an unprimeable number, because it can be changed into a prime (20279261137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383943 + ... + 433555.

It is an arithmetic number, because the mean of its divisors is an integer number (2765484360).

Almost surely, 2^20279264137 is an apocalyptic number.

It is an amenable number.

20279264137 is a deficient number, since it is larger than the sum of its proper divisors (1844610743).

20279264137 is a wasteful number, since it uses less digits than its factorization.

20279264137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86783.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 20279264137 in words is "twenty billion, two hundred seventy-nine million, two hundred sixty-four thousand, one hundred thirty-seven".