63437406772 has 6 divisors (see below), whose sum is σ = 111015461858. Its totient is φ = 31718703384.

The previous prime is 63437406763. The next prime is 63437406797. The reversal of 63437406772 is 27760473436.

It can be written as a sum of positive squares in only one way, i.e., 60730702096 + 2706704676 = 246436^2 + 52026^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7929675843 + ... + 7929675850.

Almost surely, 2^63437406772 is an apocalyptic number.

It is an amenable number.

63437406772 is a deficient number, since it is larger than the sum of its proper divisors (47578055086).

63437406772 is a wasteful number, since it uses less digits than its factorization.

63437406772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15859351697 (or 15859351695 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 49.

The spelling of 63437406772 in words is "sixty-three billion, four hundred thirty-seven million, four hundred six thousand, seven hundred seventy-two".