42049687680 has 2304 divisors, whose sum is σ = 214494739200. Its totient is φ = 7591034880.

The previous prime is 42049687661. The next prime is 42049687711. The reversal of 42049687680 is 8678694024.

42049687680 is a `hidden beast` number, since 4 + 2 + 0 + 496 + 8 + 76 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 2473511032 + ... + 2473511048.

It is an arithmetic number, because the mean of its divisors is an integer number (93096675).

Almost surely, 2^42049687680 is an apocalyptic number.

42049687680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42049687680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107247369600).

42049687680 is an abundant number, since it is smaller than the sum of its proper divisors (172445051520).

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

42049687680 is a wasteful number, since it uses less digits than its factorization.

42049687680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 42049687680 in words is "forty-two billion, forty-nine million, six hundred eighty-seven thousand, six hundred eighty".