63748532690 has 8 divisors (see below), whose sum is σ = 114747358860. Its totient is φ = 25499413072.

The previous prime is 63748532677. The next prime is 63748532723. The reversal of 63748532690 is 9623584736.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62521501849 + 1227030841 = 250043^2 + 35029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×63748532690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3187426625 + ... + 3187426644.

Almost surely, 2^63748532690 is an apocalyptic number.

63748532690 is a deficient number, since it is larger than the sum of its proper divisors (50998826170).

63748532690 is a wasteful number, since it uses less digits than its factorization.

63748532690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374853276.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 63748532690 in words is "sixty-three billion, seven hundred forty-eight million, five hundred thirty-two thousand, six hundred ninety".