27145905842 has 64 divisors (see below), whose sum is σ = 47029248000. Its totient is φ = 11638704000.

The previous prime is 27145905833. The next prime is 27145905883. The reversal of 27145905842 is 24850954172.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4306409 + ... + 4312707.

It is an arithmetic number, because the mean of its divisors is an integer number (734832000).

Almost surely, 2^27145905842 is an apocalyptic number.

27145905842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27145905842 is a deficient number, since it is larger than the sum of its proper divisors (19883342158).

27145905842 is a wasteful number, since it uses less digits than its factorization.

27145905842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 27145905842 in words is "twenty-seven billion, one hundred forty-five million, nine hundred five thousand, eight hundred forty-two".