84167787725420 has 144 divisors (see below), whose sum is σ = 220348077243840. Its totient is φ = 26856828827136.

The previous prime is 84167787725363. The next prime is 84167787725459. The reversal of 84167787725420 is 2452778776148.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49627535 + ... + 51295494.

It is an arithmetic number, because the mean of its divisors is an integer number (1530194980860).

Almost surely, 2^{84167787725420} is an apocalyptic number.

It is an amenable number.

84167787725420 is an abundant number, since it is smaller than the sum of its proper divisors (136180289518420).

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

84167787725420 is a wasteful number, since it uses less digits than its factorization.

84167787725420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100923112 (or 100923103 counting only the distinct ones).

The product of its (nonzero) digits is 295034880, while the sum is 68.

The spelling of 84167787725420 in words is "eighty-four trillion, one hundred sixty-seven billion, seven hundred eighty-seven million, seven hundred twenty-five thousand, four hundred twenty".