1051655101591 has 2 divisors, whose sum is σ = 1051655101592. Its totient is φ = 1051655101590.

The previous prime is 1051655101577. The next prime is 1051655101631. The reversal of 1051655101591 is 1951015561501.

It is an a-pointer prime, because the next prime (1051655101631) can be obtained adding 1051655101591 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1051655101591 - 2⁵ = 1051655101559 is a prime.

It is a super-2 number, since 2×1051655101591² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051655101891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525827550795 + 525827550796.

It is an arithmetic number, because the mean of its divisors is an integer number (525827550796).

Almost surely, 2^{1051655101591} is an apocalyptic number.

1051655101591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051655101591 is an equidigital number, since it uses as much as digits as its factorization.

1051655101591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33750, while the sum is 40.

The spelling of 1051655101591 in words is "one trillion, fifty-one billion, six hundred fifty-five million, one hundred one thousand, five hundred ninety-one".