649154953260 has 144 divisors (see below), whose sum is σ = 2198069153280. Its totient is φ = 153711089280.

The previous prime is 649154953243. The next prime is 649154953289. The reversal of 649154953260 is 62359451946.

649154953260 is a `hidden beast` number, since 6 + 4 + 9 + 1 + 5 + 49 + 532 + 60 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 649154953197 and 649154953206.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3727140 + ... + 3897419.

It is an arithmetic number, because the mean of its divisors is an integer number (15264369120).

Almost surely, 2^649154953260 is an apocalyptic number.

649154953260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649154953260 is an abundant number, since it is smaller than the sum of its proper divisors (1548914200020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649154953260 is a wasteful number, since it uses less digits than its factorization.

649154953260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624628 (or 7624623 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 649154953260 in words is "six hundred forty-nine billion, one hundred fifty-four million, nine hundred fifty-three thousand, two hundred sixty".