43860671862121 has 9 divisors (see below), whose sum is σ = 43895899985079. Its totient is φ = 43825472004336.

The previous prime is 43860671862113. The next prime is 43860671862131. The reversal of 43860671862121 is 12126817606834.

The square root of 43860671862121 is 6622739.

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

It can be written as a sum of positive squares in only one way, i.e., 32100326461225 + 11760345400896 = 5665715^2 + 3429336^2 .

It is not a de Polignac number, because 43860671862121 - 2³ = 43860671862113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43860671862131) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13199117166 + ... + 13199120488.

Almost surely, 2^{43860671862121} is an apocalyptic number.

43860671862121 is the 6622739-th square number.

43860671862121 is the 3311370-th centered octagonal number.

It is an amenable number.

43860671862121 is a deficient number, since it is larger than the sum of its proper divisors (35228122958).

43860671862121 is an frugal number, since it uses more digits than its factorization.

43860671862121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10632 (or 5316 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 43860671862121 in words is "forty-three trillion, eight hundred sixty billion, six hundred seventy-one million, eight hundred sixty-two thousand, one hundred twenty-one".