43961421647493 has 64 divisors (see below), whose sum is σ = 76804441920000. Its totient is φ = 24838555585536.

The previous prime is 43961421647483. The next prime is 43961421647503. The reversal of 43961421647493 is 39474612416934.

43961421647493 is a `hidden beast` number, since 4 + 3 + 9 + 6 + 142 + 16 + 474 + 9 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (43961421647483) and next prime (43961421647503).

It is not a de Polignac number, because 43961421647493 - 2²⁰ = 43961420598917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 43961421647493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43961421647483) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25843980 + ... + 27492437.

It is an arithmetic number, because the mean of its divisors is an integer number (1200069405000).

Almost surely, 2^{43961421647493} is an apocalyptic number.

It is an amenable number.

43961421647493 is a deficient number, since it is larger than the sum of its proper divisors (32843020272507).

43961421647493 is an equidigital number, since it uses as much as digits as its factorization.

43961421647493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53336536 (or 53336516 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 63.

The spelling of 43961421647493 in words is "forty-three trillion, nine hundred sixty-one billion, four hundred twenty-one million, six hundred forty-seven thousand, four hundred ninety-three".