873747457542 has 64 divisors (see below), whose sum is σ = 1972829675520. Its totient is φ = 286592385600.

The previous prime is 873747457501. The next prime is 873747457553. The reversal of 873747457542 is 245754747378.

873747457542 is a `hidden beast` number, since 8 + 7 + 3 + 7 + 47 + 45 + 7 + 542 = 666.

It is a super-2 number, since 2×873747457542² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 873747457542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1441867 + ... + 1956137.

It is an arithmetic number, because the mean of its divisors is an integer number (30825463680).

Almost surely, 2^873747457542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873747457542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986414837760).

873747457542 is an abundant number, since it is smaller than the sum of its proper divisors (1099082217978).

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

873747457542 is a wasteful number, since it uses less digits than its factorization.

873747457542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514786 (or 514780 counting only the distinct ones).

The product of its digits is 184396800, while the sum is 63.

The spelling of 873747457542 in words is "eight hundred seventy-three billion, seven hundred forty-seven million, four hundred fifty-seven thousand, five hundred forty-two".