2651941440 has 168 divisors, whose sum is σ = 9276770880. Its totient is φ = 695153664.

The previous prime is 2651941429. The next prime is 2651941447. The reversal of 2651941440 is 441491562.

2651941440 is a `hidden beast` number, since 26 + 5 + 194 + 1 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2651941395 and 2651941404.

It is not an unprimeable number, because it can be changed into a prime (2651941447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162117 + ... + 177723.

Almost surely, 2^2651941440 is an apocalyptic number.

2651941440 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 2651941440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4638385440).

2651941440 is an abundant number, since it is smaller than the sum of its proper divisors (6624829440).

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

2651941440 is a wasteful number, since it uses less digits than its factorization.

2651941440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15689 (or 15676 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2651941440 is about 51497.0041847096. The cubic root of 2651941440 is about 1384.1653605308.

The spelling of 2651941440 in words is "two billion, six hundred fifty-one million, nine hundred forty-one thousand, four hundred forty".