1072775990989 has 2 divisors, whose sum is σ = 1072775990990. Its totient is φ = 1072775990988.

The previous prime is 1072775990983. The next prime is 1072775991017. The reversal of 1072775990989 is 9890995772701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1065663936100 + 7112054889 = 1032310^2 + 84333^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072775990989 - 2²¹ = 1072773893837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1072775990983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536387995494 + 536387995495.

It is an arithmetic number, because the mean of its divisors is an integer number (536387995495).

Almost surely, 2^{1072775990989} is an apocalyptic number.

It is an amenable number.

1072775990989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1072775990989 is an equidigital number, since it uses as much as digits as its factorization.

1072775990989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180033840, while the sum is 73.

The spelling of 1072775990989 in words is "one trillion, seventy-two billion, seven hundred seventy-five million, nine hundred ninety thousand, nine hundred eighty-nine".