2171524072444 has 12 divisors (see below), whose sum is σ = 3800180537944. Its totient is φ = 1085758204464.

The previous prime is 2171524072429. The next prime is 2171524072451. The reversal of 2171524072444 is 4442704251712.

It is a self number, because there is not a number n which added to its sum of digits gives 2171524072444.

It is a congruent 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, 597967 + ... + 2168089.

Almost surely, 2^{2171524072444} is an apocalyptic number.

It is an amenable number.

2171524072444 is a deficient number, since it is larger than the sum of its proper divisors (1628656465500).

2171524072444 is a wasteful number, since it uses less digits than its factorization.

2171524072444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915884 (or 1915882 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 43.

The spelling of 2171524072444 in words is "two trillion, one hundred seventy-one billion, five hundred twenty-four million, seventy-two thousand, four hundred forty-four".