2551061430780 has 48 divisors (see below), whose sum is σ = 7197498532224. Its totient is φ = 675090045760.

The previous prime is 2551061430761. The next prime is 2551061430833. The reversal of 2551061430780 is 870341601552.

It is a happy number.

It is a super-2 number, since 2×2551061430780² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162273402 + ... + 162289121.

It is an arithmetic number, because the mean of its divisors is an integer number (149947886088).

Almost surely, 2^{2551061430780} is an apocalyptic number.

2551061430780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551061430780 is an abundant number, since it is smaller than the sum of its proper divisors (4646437101444).

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

2551061430780 is a wasteful number, since it uses less digits than its factorization.

2551061430780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324562666 (or 324562664 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 2551061430780 in words is "two trillion, five hundred fifty-one billion, sixty-one million, four hundred thirty thousand, seven hundred eighty".