63779374257 has 8 divisors (see below), whose sum is σ = 85082760960. Its totient is φ = 42497785200.

The previous prime is 63779374201. The next prime is 63779374259. The reversal of 63779374257 is 75247397736.

It is a happy number.

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

It is not a de Polignac number, because 63779374257 - 2⁶ = 63779374193 is a prime.

It is a super-2 number, since 2×63779374257² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63779374257.

It is not an unprimeable number, because it can be changed into a prime (63779374259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5442582 + ... + 5454287.

It is an arithmetic number, because the mean of its divisors is an integer number (10635345120).

Almost surely, 2^63779374257 is an apocalyptic number.

It is an amenable number.

63779374257 is a deficient number, since it is larger than the sum of its proper divisors (21303386703).

63779374257 is a wasteful number, since it uses less digits than its factorization.

63779374257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898823.

The product of its digits is 46675440, while the sum is 60.

The spelling of 63779374257 in words is "sixty-three billion, seven hundred seventy-nine million, three hundred seventy-four thousand, two hundred fifty-seven".