43954311075061 has 2 divisors, whose sum is σ = 43954311075062. Its totient is φ = 43954311075060.

The previous prime is 43954311075053. The next prime is 43954311075071. The reversal of 43954311075061 is 16057011345934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42920186822500 + 1034124252561 = 6551350^2 + 1016919^2 .

It is a cyclic number.

It is not a de Polignac number, because 43954311075061 - 2³ = 43954311075053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43954311074996 and 43954311075014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43954311075001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21977155537530 + 21977155537531.

It is an arithmetic number, because the mean of its divisors is an integer number (21977155537531).

Almost surely, 2^{43954311075061} is an apocalyptic number.

It is an amenable number.

43954311075061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43954311075061 is an equidigital number, since it uses as much as digits as its factorization.

43954311075061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 43954311075061 in words is "forty-three trillion, nine hundred fifty-four billion, three hundred eleven million, seventy-five thousand, sixty-one".