2545551356544 has 1024 divisors, whose sum is σ = 9031514112000. Its totient is φ = 690765594624.

The previous prime is 2545551356533. The next prime is 2545551356549. The reversal of 2545551356544 is 4456531555452.

2545551356544 is a `hidden beast` number, since 2 + 5 + 4 + 5 + 551 + 35 + 6 + 54 + 4 = 666.

It is a super-2 number, since 2×2545551356544² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2545551356549) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10650842377 + ... + 10650842615.

It is an arithmetic number, because the mean of its divisors is an integer number (8819838000).

Almost surely, 2^{2545551356544} is an apocalyptic number.

2545551356544 is a gapful number since it is divisible by the number (24) 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 2545551356544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4515757056000).

2545551356544 is an abundant number, since it is smaller than the sum of its proper divisors (6485962755456).

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

2545551356544 is a wasteful number, since it uses less digits than its factorization.

2545551356544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 524 counting only the distinct ones).

The product of its digits is 36000000, while the sum is 54.

The spelling of 2545551356544 in words is "two trillion, five hundred forty-five billion, five hundred fifty-one million, three hundred fifty-six thousand, five hundred forty-four".