43151455493 has 2 divisors, whose sum is σ = 43151455494. Its totient is φ = 43151455492.

The previous prime is 43151455481. The next prime is 43151455531. The reversal of 43151455493 is 39455415134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24824523364 + 18326932129 = 157558^2 + 135377^2 .

It is a cyclic number.

It is not a de Polignac number, because 43151455493 - 2¹² = 43151451397 is a prime.

It is a super-2 number, since 2×43151455493² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43151455093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21575727746 + 21575727747.

It is an arithmetic number, because the mean of its divisors is an integer number (21575727747).

Almost surely, 2^43151455493 is an apocalyptic number.

It is an amenable number.

43151455493 is a deficient number, since it is larger than the sum of its proper divisors (1).

43151455493 is an equidigital number, since it uses as much as digits as its factorization.

43151455493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 44.

The spelling of 43151455493 in words is "forty-three billion, one hundred fifty-one million, four hundred fifty-five thousand, four hundred ninety-three".