810378212154 has 32 divisors (see below), whose sum is σ = 1902355034496. Its totient is φ = 225278884800.

The previous prime is 810378212143. The next prime is 810378212197. The reversal of 810378212154 is 451212873018.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260737897 + ... + 260741004.

It is an arithmetic number, because the mean of its divisors is an integer number (59448594828).

Almost surely, 2^810378212154 is an apocalyptic number.

810378212154 is an abundant number, since it is smaller than the sum of its proper divisors (1091976822342).

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

810378212154 is a wasteful number, since it uses less digits than its factorization.

810378212154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521478950.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 810378212154 in words is "eight hundred ten billion, three hundred seventy-eight million, two hundred twelve thousand, one hundred fifty-four".