84390771456 has 90 divisors (see below), whose sum is σ = 251638072532. Its totient is φ = 28130250240.

The previous prime is 84390771349. The next prime is 84390771467. The reversal of 84390771456 is 65417709348.

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 9 ways as a sum of consecutive naturals, for example, 2014150 + ... + 2055621.

Almost surely, 2^84390771456 is an apocalyptic number.

It is an amenable number.

84390771456 is an abundant number, since it is smaller than the sum of its proper divisors (167247301076).

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

84390771456 is an equidigital number, since it uses as much as digits as its factorization.

84390771456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069799 (or 4069776 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 84390771456 in words is "eighty-four billion, three hundred ninety million, seven hundred seventy-one thousand, four hundred fifty-six".