649193728510 has 16 divisors (see below), whose sum is σ = 1195724263536. Its totient is φ = 253638479808.

The previous prime is 649193728501. The next prime is 649193728523. The reversal of 649193728510 is 15827391946.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754875999 + ... + 754876858.

It is an arithmetic number, because the mean of its divisors is an integer number (74732766471).

It is a 1-persistent number, because it is pandigital, but 2⋅649193728510 = 1298387457020 is not.

Almost surely, 2^649193728510 is an apocalyptic number.

649193728510 is a deficient number, since it is larger than the sum of its proper divisors (546530535026).

649193728510 is a wasteful number, since it uses less digits than its factorization.

649193728510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509752907.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 649193728510 in words is "six hundred forty-nine billion, one hundred ninety-three million, seven hundred twenty-eight thousand, five hundred ten".