427192989515 has 4 divisors (see below), whose sum is σ = 512631587424. Its totient is φ = 341754391608.

The previous prime is 427192989479. The next prime is 427192989557. The reversal of 427192989515 is 515989291724.

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

It is a cyclic number.

It is not a de Polignac number, because 427192989515 - 2⁸ = 427192989259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42719298947 + ... + 42719298956.

It is an arithmetic number, because the mean of its divisors is an integer number (128157896856).

Almost surely, 2^427192989515 is an apocalyptic number.

427192989515 is a deficient number, since it is larger than the sum of its proper divisors (85438597909).

427192989515 is an equidigital number, since it uses as much as digits as its factorization.

427192989515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85438597908.

The product of its digits is 16329600, while the sum is 62.

The spelling of 427192989515 in words is "four hundred twenty-seven billion, one hundred ninety-two million, nine hundred eighty-nine thousand, five hundred fifteen".