1016711121651 has 4 divisors (see below), whose sum is σ = 1355614828872. Its totient is φ = 677807414432.

The previous prime is 1016711121599. The next prime is 1016711121653. The reversal of 1016711121651 is 1561211176101.

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 1016711121651 - 2¹³ = 1016711113459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1016711121653) 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, 169451853606 + ... + 169451853611.

It is an arithmetic number, because the mean of its divisors is an integer number (338903707218).

Almost surely, 2^{1016711121651} is an apocalyptic number.

1016711121651 is a deficient number, since it is larger than the sum of its proper divisors (338903707221).

1016711121651 is an equidigital number, since it uses as much as digits as its factorization.

1016711121651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338903707220.

The product of its (nonzero) digits is 2520, while the sum is 33.

Adding to 1016711121651 its reverse (1561211176101), we get a palindrome (2577922297752).

The spelling of 1016711121651 in words is "one trillion, sixteen billion, seven hundred eleven million, one hundred twenty-one thousand, six hundred fifty-one".