309612421377 has 12 divisors (see below), whose sum is σ = 511106219520. Its totient is φ = 176921383608.

The previous prime is 309612421333. The next prime is 309612421379. The reversal of 309612421377 is 773124216903.

309612421377 is a `hidden beast` number, since 3 + 0 + 9 + 612 + 4 + 21 + 3 + 7 + 7 = 666.

It is not a de Polignac number, because 309612421377 - 2²² = 309608227073 is a prime.

It is a super-4 number, since 4×309612421377⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (309612421379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2457241377 + ... + 2457241502.

It is an arithmetic number, because the mean of its divisors is an integer number (42592184960).

Almost surely, 2^309612421377 is an apocalyptic number.

It is an amenable number.

309612421377 is a deficient number, since it is larger than the sum of its proper divisors (201493798143).

309612421377 is a wasteful number, since it uses less digits than its factorization.

309612421377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914482892 (or 4914482889 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 309612421377 in words is "three hundred nine billion, six hundred twelve million, four hundred twenty-one thousand, three hundred seventy-seven".