649758090453 has 8 divisors (see below), whose sum is σ = 866360061600. Its totient is φ = 433164089808.

The previous prime is 649758090419. The next prime is 649758090463. The reversal of 649758090453 is 354090857946.

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

It is not a de Polignac number, because 649758090453 - 2¹³ = 649758082261 is a prime.

It is a super-2 number, since 2×649758090453² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649758090463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1799743 + ... + 2130396.

It is an arithmetic number, because the mean of its divisors is an integer number (108295007700).

Almost surely, 2^649758090453 is an apocalyptic number.

It is an amenable number.

649758090453 is a deficient number, since it is larger than the sum of its proper divisors (216601971147).

649758090453 is a wasteful number, since it uses less digits than its factorization.

649758090453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985251.

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 649758090453 in words is "six hundred forty-nine billion, seven hundred fifty-eight million, ninety thousand, four hundred fifty-three".