27952978953 has 16 divisors (see below), whose sum is σ = 38950179840. Its totient is φ = 17798010384.

The previous prime is 27952978939. The next prime is 27952978973. The reversal of 27952978953 is 35987925972.

It is not a de Polignac number, because 27952978953 - 2¹³ = 27952970761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27952978973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261901 + ... + 352842.

It is an arithmetic number, because the mean of its divisors is an integer number (2434386240).

Almost surely, 2^27952978953 is an apocalyptic number.

27952978953 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

27952978953 is a deficient number, since it is larger than the sum of its proper divisors (10997200887).

27952978953 is a wasteful number, since it uses less digits than its factorization.

27952978953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615428.

The product of its digits is 85730400, while the sum is 66.

The spelling of 27952978953 in words is "twenty-seven billion, nine hundred fifty-two million, nine hundred seventy-eight thousand, nine hundred fifty-three".