42166451550 has 48 divisors (see below), whose sum is σ = 104588149680. Its totient is φ = 11242736640.

The previous prime is 42166451527. The next prime is 42166451557. The reversal of 42166451550 is 5515466124.

It is a junction number, because it is equal to n+sod(n) for n = 42166451499 and 42166451508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42166451557) 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, 1275024 + ... + 1307676.

It is an arithmetic number, because the mean of its divisors is an integer number (2178919785).

Almost surely, 2^42166451550 is an apocalyptic number.

42166451550 is an abundant number, since it is smaller than the sum of its proper divisors (62421698130).

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

42166451550 is a wasteful number, since it uses less digits than its factorization.

42166451550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41277 (or 41272 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 42166451550 in words is "forty-two billion, one hundred sixty-six million, four hundred fifty-one thousand, five hundred fifty".