57726217236 has 144 divisors (see below), whose sum is σ = 144805377024. Its totient is φ = 17888257728.

The previous prime is 57726217187. The next prime is 57726217243. The reversal of 57726217236 is 63271262775.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48631435 + ... + 48632621.

It is an arithmetic number, because the mean of its divisors is an integer number (1005592896).

Almost surely, 2^57726217236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57726217236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72402688512).

57726217236 is an abundant number, since it is smaller than the sum of its proper divisors (87079159788).

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

57726217236 is a wasteful number, since it uses less digits than its factorization.

57726217236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450 (or 1425 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 48.

The spelling of 57726217236 in words is "fifty-seven billion, seven hundred twenty-six million, two hundred seventeen thousand, two hundred thirty-six".