2139676560 has 400 divisors, whose sum is σ = 8698478976. Its totient is φ = 477259776.

The previous prime is 2139676543. The next prime is 2139676573. The reversal of 2139676560 is 656769312.

2139676560 is a `hidden beast` number, since 2 + 13 + 9 + 6 + 76 + 560 = 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 79 ways as a sum of consecutive naturals, for example, 1949932 + ... + 1951028.

Almost surely, 2^2139676560 is an apocalyptic number.

2139676560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139676560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4349239488).

2139676560 is an abundant number, since it is smaller than the sum of its proper divisors (6558802416).

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

2139676560 is a wasteful number, since it uses less digits than its factorization.

2139676560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 2139676560 is about 46256.6380101278. The cubic root of 2139676560 is about 1288.5938165633.

The spelling of 2139676560 in words is "two billion, one hundred thirty-nine million, six hundred seventy-six thousand, five hundred sixty".