42546420664 has 32 divisors (see below), whose sum is σ = 87046326000. Its totient is φ = 19334936320.

The previous prime is 42546420617. The next prime is 42546420667. The reversal of 42546420664 is 46602464524.

It is a super-2 number, since 2×42546420664² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42546420664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42546420667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357114 + ... + 461110.

Almost surely, 2^42546420664 is an apocalyptic number.

42546420664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42546420664 is an abundant number, since it is smaller than the sum of its proper divisors (44499905336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42546420664 is a wasteful number, since it uses less digits than its factorization.

42546420664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108663 (or 108659 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 42546420664 in words is "forty-two billion, five hundred forty-six million, four hundred twenty thousand, six hundred sixty-four".