84770804140 has 24 divisors (see below), whose sum is σ = 194202206352. Its totient is φ = 30825746880.

The previous prime is 84770804137. The next prime is 84770804143. The reversal of 84770804140 is 4140807748.

It is an interprime number because it is at equal distance from previous prime (84770804137) and next prime (84770804143).

It is a super-2 number, since 2×84770804140² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84770804143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192660699 + ... + 192661138.

It is an arithmetic number, because the mean of its divisors is an integer number (8091758598).

Almost surely, 2^84770804140 is an apocalyptic number.

It is an amenable number.

84770804140 is an abundant number, since it is smaller than the sum of its proper divisors (109431402212).

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

84770804140 is a wasteful number, since it uses less digits than its factorization.

84770804140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385321857 (or 385321855 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 43.

The spelling of 84770804140 in words is "eighty-four billion, seven hundred seventy million, eight hundred four thousand, one hundred forty".