649157141751946 has 8 divisors (see below), whose sum is σ = 973796039528004. Its totient is φ = 324558461909280.

The previous prime is 649157141751901. The next prime is 649157141751983.

649157141751946 is nontrivially palindromic in base 10.

649157141751946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 636757834551721 + 12399307200225 = 25234061^2 + 3521265^2 .

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

It is a super-2 number, since 2×649157141751946² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10054442995 + ... + 10054507558.

Almost surely, 2^{649157141751946} is an apocalyptic number.

649157141751946 is a deficient number, since it is larger than the sum of its proper divisors (324638897776058).

649157141751946 is a wasteful number, since it uses less digits than its factorization.

649157141751946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20108966696.

The product of its digits is 228614400, while the sum is 70.

The spelling of 649157141751946 in words is "six hundred forty-nine trillion, one hundred fifty-seven billion, one hundred forty-one million, seven hundred fifty-one thousand, nine hundred forty-six".