84541870651 has 72 divisors (see below), whose sum is σ = 106059231200. Its totient is φ = 67309837056.

The previous prime is 84541870607. The next prime is 84541870657. The reversal of 84541870651 is 15607814548.

It is not a de Polignac number, because 84541870651 - 2⁹ = 84541870139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84541870595 and 84541870604.

It is not an unprimeable number, because it can be changed into a prime (84541870657) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 949908615 + ... + 949908703.

Almost surely, 2^84541870651 is an apocalyptic number.

84541870651 is a deficient number, since it is larger than the sum of its proper divisors (21517360549).

84541870651 is an frugal number, since it uses more digits than its factorization.

84541870651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 84541870651 in words is "eighty-four billion, five hundred forty-one million, eight hundred seventy thousand, six hundred fifty-one".