1051655101891 has 2 divisors, whose sum is σ = 1051655101892. Its totient is φ = 1051655101890.

The previous prime is 1051655101877. The next prime is 1051655101901. The reversal of 1051655101891 is 1981015561501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1051655101891 - 2²¹ = 1051653004739 is a prime.

It is a super-2 number, since 2×1051655101891² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051655101591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525827550945 + 525827550946.

It is an arithmetic number, because the mean of its divisors is an integer number (525827550946).

Almost surely, 2^{1051655101891} is an apocalyptic number.

1051655101891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051655101891 is an equidigital number, since it uses as much as digits as its factorization.

1051655101891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 43.

The spelling of 1051655101891 in words is "one trillion, fifty-one billion, six hundred fifty-five million, one hundred one thousand, eight hundred ninety-one".