1634666357011 has 4 divisors (see below), whose sum is σ = 1649943612792. Its totient is φ = 1619389101232.

The previous prime is 1634666356949. The next prime is 1634666357057. The reversal of 1634666357011 is 1107536664361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1634666357011 - 2²¹ = 1634664259859 is a prime.

It is a super-2 number, since 2×1634666357011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1634466357011) 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, 7638627730 + ... + 7638627943.

It is an arithmetic number, because the mean of its divisors is an integer number (412485903198).

Almost surely, 2^{1634666357011} is an apocalyptic number.

1634666357011 is a deficient number, since it is larger than the sum of its proper divisors (15277255781).

1634666357011 is a wasteful number, since it uses less digits than its factorization.

1634666357011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15277255780.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 1634666357011 in words is "one trillion, six hundred thirty-four billion, six hundred sixty-six million, three hundred fifty-seven thousand, eleven".