84378512070 has 24 divisors (see below), whose sum is σ = 219384131616. Its totient is φ = 22500936528.

The previous prime is 84378512069. The next prime is 84378512081. The reversal of 84378512070 is 7021587348.

84378512070 is a `hidden beast` number, since 8 + 437 + 8 + 5 + 1 + 207 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468769422 + ... + 468769601.

It is an arithmetic number, because the mean of its divisors is an integer number (9141005484).

Almost surely, 2^84378512070 is an apocalyptic number.

84378512070 is an abundant number, since it is smaller than the sum of its proper divisors (135005619546).

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

84378512070 is a wasteful number, since it uses less digits than its factorization.

84378512070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937539036 (or 937539033 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 84378512070 in words is "eighty-four billion, three hundred seventy-eight million, five hundred twelve thousand, seventy".