649566254254 has 8 divisors (see below), whose sum is σ = 1031664050928. Its totient is φ = 305678237280.

The previous prime is 649566254221. The next prime is 649566254261. The reversal of 649566254254 is 452452665946.

It is a happy number.

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

It is a congruent number.

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, 9552444882 + ... + 9552444949.

It is an arithmetic number, because the mean of its divisors is an integer number (128958006366).

Almost surely, 2^649566254254 is an apocalyptic number.

649566254254 is a deficient number, since it is larger than the sum of its proper divisors (382097796674).

649566254254 is a wasteful number, since it uses less digits than its factorization.

649566254254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19104889850.

The product of its digits is 62208000, while the sum is 58.

The spelling of 649566254254 in words is "six hundred forty-nine billion, five hundred sixty-six million, two hundred fifty-four thousand, two hundred fifty-four".