649523102340 has 96 divisors (see below), whose sum is σ = 2145521516544. Its totient is φ = 143673310080.

The previous prime is 649523102281. The next prime is 649523102369. The reversal of 649523102340 is 43201325946.

It is a super-2 number, since 2×649523102340² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24930264 + ... + 24956303.

It is an arithmetic number, because the mean of its divisors is an integer number (22349182464).

Almost surely, 2^649523102340 is an apocalyptic number.

649523102340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649523102340 is an abundant number, since it is smaller than the sum of its proper divisors (1495998414204).

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

649523102340 is a wasteful number, since it uses less digits than its factorization.

649523102340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49886617 (or 49886615 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 649523102340 in words is "six hundred forty-nine billion, five hundred twenty-three million, one hundred two thousand, three hundred forty".