2578211380 has 24 divisors (see below), whose sum is σ = 5422691232. Its totient is φ = 1029675552.

The previous prime is 2578211371. The next prime is 2578211411. The reversal of 2578211380 is 831128752.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87382 + ... + 113101.

It is an arithmetic number, because the mean of its divisors is an integer number (225945468).

Almost surely, 2^2578211380 is an apocalyptic number.

2578211380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578211380 is an abundant number, since it is smaller than the sum of its proper divisors (2844479852).

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

2578211380 is a wasteful number, since it uses less digits than its factorization.

2578211380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201135 (or 201133 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 2578211380 is about 50776.0906332892. The cubic root of 2578211380 is about 1371.2169519602.

The spelling of 2578211380 in words is "two billion, five hundred seventy-eight million, two hundred eleven thousand, three hundred eighty".