42633669421 has 16 divisors (see below), whose sum is σ = 49653886464. Its totient is φ = 35846164224.

The previous prime is 42633669383. The next prime is 42633669433. The reversal of 42633669421 is 12496633624.

It is a cyclic number.

It is not a de Polignac number, because 42633669421 - 2¹³ = 42633661229 is a prime.

It is a super-2 number, since 2×42633669421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42633669451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2442501 + ... + 2459893.

It is an arithmetic number, because the mean of its divisors is an integer number (3103367904).

Almost surely, 2^42633669421 is an apocalyptic number.

It is an amenable number.

42633669421 is a deficient number, since it is larger than the sum of its proper divisors (7020217043).

42633669421 is a wasteful number, since it uses less digits than its factorization.

42633669421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24060.

The product of its digits is 1119744, while the sum is 46.

The spelling of 42633669421 in words is "forty-two billion, six hundred thirty-three million, six hundred sixty-nine thousand, four hundred twenty-one".