252777502780 has 96 divisors (see below), whose sum is σ = 594719677440. Its totient is φ = 89460122880.

The previous prime is 252777502717. The next prime is 252777502819. The reversal of 252777502780 is 87205777252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1782574 + ... + 1919146.

It is an arithmetic number, because the mean of its divisors is an integer number (6194996640).

Almost surely, 2^252777502780 is an apocalyptic number.

252777502780 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 252777502780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297359838720).

252777502780 is an abundant number, since it is smaller than the sum of its proper divisors (341942174660).

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

252777502780 is a wasteful number, since it uses less digits than its factorization.

252777502780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136819 (or 136817 counting only the distinct ones).

The product of its (nonzero) digits is 3841600, while the sum is 52.

It can be divided in two parts, 252777 and 502780, that added together give a palindrome (755557).

The spelling of 252777502780 in words is "two hundred fifty-two billion, seven hundred seventy-seven million, five hundred two thousand, seven hundred eighty".