1542439446772 has 12 divisors (see below), whose sum is σ = 3084878893600. Its totient is φ = 661045477176.

The previous prime is 1542439446731. The next prime is 1542439446781. The reversal of 1542439446772 is 2776449342451.

1542439446772 is an admirable number.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

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, 27543561522 + ... + 27543561577.

Almost surely, 2^{1542439446772} is an apocalyptic number.

It is an amenable number.

1542439446772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1542439446772 is a wasteful number, since it uses less digits than its factorization.

1542439446772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55087123110 (or 55087123108 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 58.

The spelling of 1542439446772 in words is "one trillion, five hundred forty-two billion, four hundred thirty-nine million, four hundred forty-six thousand, seven hundred seventy-two".