2555496261780 has 384 divisors, whose sum is σ = 8988753199104. Its totient is φ = 526992998400.

The previous prime is 2555496261767. The next prime is 2555496261793. The reversal of 2555496261780 is 871626945552.

It is an interprime number because it is at equal distance from previous prime (2555496261767) and next prime (2555496261793).

It is a super-2 number, since 2×2555496261780² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 403262772 + ... + 403269108.

It is an arithmetic number, because the mean of its divisors is an integer number (23408211456).

Almost surely, 2^{2555496261780} is an apocalyptic number.

2555496261780 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 2555496261780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4494376599552).

2555496261780 is an abundant number, since it is smaller than the sum of its proper divisors (6433256937324).

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

2555496261780 is a wasteful number, since it uses less digits than its factorization.

2555496261780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015 (or 7013 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 2555496261780 in words is "two trillion, five hundred fifty-five billion, four hundred ninety-six million, two hundred sixty-one thousand, seven hundred eighty".