40432100021393 has 2 divisors, whose sum is σ = 40432100021394. Its totient is φ = 40432100021392.

The previous prime is 40432100021371. The next prime is 40432100021483. The reversal of 40432100021393 is 39312000123404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38248139202064 + 2183960819329 = 6184508^2 + 1477823^2 .

It is a cyclic number.

It is not a de Polignac number, because 40432100021393 - 2⁶ = 40432100021329 is a prime.

It is not a weakly prime, because it can be changed into another prime (40432103021393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20216050010696 + 20216050010697.

It is an arithmetic number, because the mean of its divisors is an integer number (20216050010697).

Almost surely, 2^{40432100021393} is an apocalyptic number.

It is an amenable number.

40432100021393 is a deficient number, since it is larger than the sum of its proper divisors (1).

40432100021393 is an equidigital number, since it uses as much as digits as its factorization.

40432100021393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 40432100021393 its reverse (39312000123404), we get a palindrome (79744100144797).

The spelling of 40432100021393 in words is "forty trillion, four hundred thirty-two billion, one hundred million, twenty-one thousand, three hundred ninety-three".