637049321412 has 48 divisors (see below), whose sum is σ = 1699175624832. Its totient is φ = 181973652480.

The previous prime is 637049321393. The next prime is 637049321417. The reversal of 637049321412 is 214123940736.

It is a happy number.

It is a super-2 number, since 2×637049321412² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (637049321417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461139 + ... + 1219322.

It is an arithmetic number, because the mean of its divisors is an integer number (35399492184).

Almost surely, 2^637049321412 is an apocalyptic number.

It is an amenable number.

637049321412 is an abundant number, since it is smaller than the sum of its proper divisors (1062126303420).

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

637049321412 is a wasteful number, since it uses less digits than its factorization.

637049321412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684988 (or 1684986 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 637049321412 in words is "six hundred thirty-seven billion, forty-nine million, three hundred twenty-one thousand, four hundred twelve".