27912400421972 has 48 divisors (see below), whose sum is σ = 55136912699904. Its totient is φ = 12249017424000.

The previous prime is 27912400421963. The next prime is 27912400421977.

It is a happy number.

27912400421972 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 27912400421972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27912400421977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23729363 + ... + 24877850.

It is an arithmetic number, because the mean of its divisors is an integer number (1148685681248).

Almost surely, 2^{27912400421972} is an apocalyptic number.

27912400421972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27912400421972 is a deficient number, since it is larger than the sum of its proper divisors (27224512277932).

27912400421972 is a wasteful number, since it uses less digits than its factorization.

27912400421972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48607680 (or 48607678 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 27912400421972 in words is "twenty-seven trillion, nine hundred twelve billion, four hundred million, four hundred twenty-one thousand, nine hundred seventy-two".