2012155462544 has 80 divisors (see below), whose sum is σ = 4227201727488. Its totient is φ = 924222590976.

The previous prime is 2012155462523. The next prime is 2012155462549. The reversal of 2012155462544 is 4452645512102.

It is not an unprimeable number, because it can be changed into a prime (2012155462549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4477292 + ... + 4906164.

Almost surely, 2^{2012155462544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012155462544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2113600863744).

2012155462544 is an abundant number, since it is smaller than the sum of its proper divisors (2215046264944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2012155462544 is a wasteful number, since it uses less digits than its factorization.

2012155462544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429312 (or 429306 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 2012155462544 in words is "two trillion, twelve billion, one hundred fifty-five million, four hundred sixty-two thousand, five hundred forty-four".