649907148371 has 4 divisors (see below), whose sum is σ = 699900005952. Its totient is φ = 599914290792.

The previous prime is 649907148337. The next prime is 649907148379. The reversal of 649907148371 is 173841709946.

649907148371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 649907148371 - 2³⁸ = 375029241427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 649907148371.

It is not an unprimeable number, because it can be changed into a prime (649907148379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24996428771 + ... + 24996428796.

It is an arithmetic number, because the mean of its divisors is an integer number (174975001488).

Almost surely, 2^649907148371 is an apocalyptic number.

649907148371 is a deficient number, since it is larger than the sum of its proper divisors (49992857581).

649907148371 is a wasteful number, since it uses less digits than its factorization.

649907148371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49992857580.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 649907148371 in words is "six hundred forty-nine billion, nine hundred seven million, one hundred forty-eight thousand, three hundred seventy-one".