83415778385500 has 48 divisors (see below), whose sum is σ = 198741883642848. Its totient is φ = 30333010320000.

The previous prime is 83415778385479. The next prime is 83415778385531. The reversal of 83415778385500 is 558387751438.

It is a super-4 number, since 4×83415778385500⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 7583247081 + ... + 7583258080.

It is an arithmetic number, because the mean of its divisors is an integer number (4140455909226).

Almost surely, 2^{83415778385500} is an apocalyptic number.

It is an amenable number.

83415778385500 is an abundant number, since it is smaller than the sum of its proper divisors (115326105257348).

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

83415778385500 is a wasteful number, since it uses less digits than its factorization.

83415778385500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15166505191 (or 15166505179 counting only the distinct ones).

The product of its (nonzero) digits is 112896000, while the sum is 64.

The spelling of 83415778385500 in words is "eighty-three trillion, four hundred fifteen billion, seven hundred seventy-eight million, three hundred eighty-five thousand, five hundred".