84057643890 has 224 divisors, whose sum is σ = 249901981056. Its totient is φ = 20177786880.

The previous prime is 84057643883. The next prime is 84057643903. The reversal of 84057643890 is 9834675048.

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

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 8254482 + ... + 8264658.

It is an arithmetic number, because the mean of its divisors is an integer number (1115633844).

Almost surely, 2^84057643890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84057643890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124950990528).

84057643890 is an abundant number, since it is smaller than the sum of its proper divisors (165844337166).

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

84057643890 is a wasteful number, since it uses less digits than its factorization.

84057643890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316 (or 10301 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 84057643890 in words is "eighty-four billion, fifty-seven million, six hundred forty-three thousand, eight hundred ninety".