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43454845493 is a prime number
BaseRepresentation
bin101000011110000111…
…000101001000110101
311011011102221212112222
4220132013011020311
51202443420023433
631543552052125
73065565043433
oct503607051065
9134142855488
1043454845493
111747a144654
128508b34045
134136a6c137
142163373d53
1511e4e74b98
hexa1e1c5235

43454845493 has 2 divisors, whose sum is σ = 43454845494. Its totient is φ = 43454845492.

The previous prime is 43454845459. The next prime is 43454845501. The reversal of 43454845493 is 39454845434.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23911364689 + 19543480804 = 154633^2 + 139798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-43454845493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43454845403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21727422746 + 21727422747.

It is an arithmetic number, because the mean of its divisors is an integer number (21727422747).

Almost surely, 243454845493 is an apocalyptic number.

It is an amenable number.

43454845493 is a deficient number, since it is larger than the sum of its proper divisors (1).

43454845493 is an equidigital number, since it uses as much as digits as its factorization.

43454845493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16588800, while the sum is 53.

The spelling of 43454845493 in words is "forty-three billion, four hundred fifty-four million, eight hundred forty-five thousand, four hundred ninety-three".