43249857156 has 243 divisors, whose sum is σ = 126543775813. Its totient is φ = 12444685440.

The previous prime is 43249857121. The next prime is 43249857163. The reversal of 43249857156 is 65175894234.

It is a happy number.

The square root of 43249857156 is 207966.

It is a perfect power (a square), and thus also a powerful number.

43249857156 is a `hidden beast` number, since 4 + 32 + 498 + 5 + 71 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25405172100 + 17844685056 = 159390^2 + 133584^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 315692320 + ... + 315692456.

Almost surely, 2^43249857156 is an apocalyptic number.

43249857156 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

43249857156 is the 207966-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43249857156

43249857156 is an abundant number, since it is smaller than the sum of its proper divisors (83293918657).

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

43249857156 is a wasteful number, since it uses less digits than its factorization.

43249857156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 176 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 43249857156 in words is "forty-three billion, two hundred forty-nine million, eight hundred fifty-seven thousand, one hundred fifty-six".