1620752267051 has 2 divisors, whose sum is σ = 1620752267052. Its totient is φ = 1620752267050.

The previous prime is 1620752266993. The next prime is 1620752267063. The reversal of 1620752267051 is 1507622570261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1620752267051 - 2²⁶ = 1620685158187 is a prime.

It is a super-2 number, since 2×1620752267051² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1620752266993 and 1620752267011.

It is not a weakly prime, because it can be changed into another prime (1620752263051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810376133525 + 810376133526.

It is an arithmetic number, because the mean of its divisors is an integer number (810376133526).

Almost surely, 2^{1620752267051} is an apocalyptic number.

1620752267051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620752267051 is an equidigital number, since it uses as much as digits as its factorization.

1620752267051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 1620752267051 in words is "one trillion, six hundred twenty billion, seven hundred fifty-two million, two hundred sixty-seven thousand, fifty-one".