2051554372560 has 800 divisors, whose sum is σ = 8892930816000. Its totient is φ = 425847352320.

The previous prime is 2051554372547. The next prime is 2051554372573. The reversal of 2051554372560 is 652734551502.

It is a happy number.

2051554372560 is a `hidden beast` number, since 2 + 0 + 5 + 1 + 5 + 54 + 37 + 2 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (2051554372547) and next prime (2051554372573).

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 698043571 + ... + 698046509.

It is an arithmetic number, because the mean of its divisors is an integer number (11116163520).

Almost surely, 2^{2051554372560} is an apocalyptic number.

2051554372560 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 2051554372560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4446465408000).

2051554372560 is an abundant number, since it is smaller than the sum of its proper divisors (6841376443440).

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

2051554372560 is a wasteful number, since it uses less digits than its factorization.

2051554372560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381 (or 4366 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

The spelling of 2051554372560 in words is "two trillion, fifty-one billion, five hundred fifty-four million, three hundred seventy-two thousand, five hundred sixty".