649734145201 has 4 divisors (see below), whose sum is σ = 660746588400. Its totient is φ = 638721702004.

The previous prime is 649734145147. The next prime is 649734145253. The reversal of 649734145201 is 102541437946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 649734145201 - 2¹³ = 649734137009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649734140201) 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, 5506221511 + ... + 5506221628.

It is an arithmetic number, because the mean of its divisors is an integer number (165186647100).

Almost surely, 2^649734145201 is an apocalyptic number.

It is an amenable number.

649734145201 is a deficient number, since it is larger than the sum of its proper divisors (11012443199).

649734145201 is a wasteful number, since it uses less digits than its factorization.

649734145201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012443198.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 649734145201 in words is "six hundred forty-nine billion, seven hundred thirty-four million, one hundred forty-five thousand, two hundred one".