42818964329856 has 128 divisors (see below), whose sum is σ = 133622117879040. Its totient is φ = 11977332664320.

The previous prime is 42818964329839. The next prime is 42818964329861. The reversal of 42818964329856 is 65892346981824.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389832220 + ... + 389942043.

It is an arithmetic number, because the mean of its divisors is an integer number (1043922795930).

Almost surely, 2^{42818964329856} is an apocalyptic number.

It is an amenable number.

42818964329856 is an abundant number, since it is smaller than the sum of its proper divisors (90803153549184).

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

42818964329856 is a wasteful number, since it uses less digits than its factorization.

42818964329856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779774304 (or 779774292 counting only the distinct ones).

The product of its digits is 1433272320, while the sum is 75.

The spelling of 42818964329856 in words is "forty-two trillion, eight hundred eighteen billion, nine hundred sixty-four million, three hundred twenty-nine thousand, eight hundred fifty-six".