42431261045516 has 96 divisors (see below), whose sum is σ = 90178476716160. Its totient is φ = 17080009906176.

The previous prime is 42431261045483. The next prime is 42431261045531. The reversal of 42431261045516 is 61554016213424.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162617990 + ... + 162878706.

It is an arithmetic number, because the mean of its divisors is an integer number (939359132460).

Almost surely, 2^{42431261045516} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42431261045516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45089238358080).

42431261045516 is an abundant number, since it is smaller than the sum of its proper divisors (47747215670644).

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

42431261045516 is a wasteful number, since it uses less digits than its factorization.

42431261045516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266211 (or 266209 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 42431261045516 in words is "forty-two trillion, four hundred thirty-one billion, two hundred sixty-one million, forty-five thousand, five hundred sixteen".