309620050051 has 4 divisors (see below), whose sum is σ = 333436976992. Its totient is φ = 285803123112.

The previous prime is 309620050049. The next prime is 309620050121. The reversal of 309620050051 is 150050026903.

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

It is not a de Polignac number, because 309620050051 - 2¹ = 309620050049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 309620049995 and 309620050022.

It is not an unprimeable number, because it can be changed into a prime (309620050651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11908463451 + ... + 11908463476.

It is an arithmetic number, because the mean of its divisors is an integer number (83359244248).

Almost surely, 2^309620050051 is an apocalyptic number.

309620050051 is a deficient number, since it is larger than the sum of its proper divisors (23816926941).

309620050051 is a wasteful number, since it uses less digits than its factorization.

309620050051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23816926940.

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 309620050051 its reverse (150050026903), we get a palindrome (459670076954).

The spelling of 309620050051 in words is "three hundred nine billion, six hundred twenty million, fifty thousand, fifty-one".