42691405005550 has 48 divisors (see below), whose sum is σ = 90948306926880. Its totient is φ = 14605024527360.

The previous prime is 42691405005539. The next prime is 42691405005551. The reversal of 42691405005550 is 5550050419624.

It is a super-2 number, since 2×42691405005550² (a number of 28 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 42691405005550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42691405005551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133292395 + ... + 133612294.

It is an arithmetic number, because the mean of its divisors is an integer number (1894756394310).

Almost surely, 2^{42691405005550} is an apocalyptic number.

42691405005550 is an abundant number, since it is smaller than the sum of its proper divisors (48256901921330).

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

42691405005550 is a wasteful number, since it uses less digits than its factorization.

42691405005550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266905165 (or 266905160 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 42691405005550 in words is "forty-two trillion, six hundred ninety-one billion, four hundred five million, five thousand, five hundred fifty".