83121228350838 has 32 divisors (see below), whose sum is σ = 184714753799520. Its totient is φ = 27706939164000.

The previous prime is 83121228350821. The next prime is 83121228350879. The reversal of 83121228350838 is 83805382212138.

83121228350838 is a `hidden beast` number, since 8 + 3 + 1 + 2 + 1 + 22 + 83 + 508 + 38 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 7531588 + ... + 14932088.

It is an arithmetic number, because the mean of its divisors is an integer number (5772336056235).

Almost surely, 2^{83121228350838} is an apocalyptic number.

83121228350838 is an abundant number, since it is smaller than the sum of its proper divisors (101593525448682).

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

83121228350838 is a wasteful number, since it uses less digits than its factorization.

83121228350838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7608509 (or 7608503 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 83121228350838 in words is "eighty-three trillion, one hundred twenty-one billion, two hundred twenty-eight million, three hundred fifty thousand, eight hundred thirty-eight".